Recently added

A running catalog log, newest first. Subscribe to the RSS feed.

Directory updates

AddedProductSummaryStatus
Jul 30, 2026[M]ouse PS/2 to 1351 Adapter Family
Viacheslav Slavinsky / community builds		Translates a PS/2 mouse into Commodore 1351-style analog mouse signals for the C64 and C128.available
Jul 30, 20261541 Diagnostic Cartridge
Jani and C64iSTANBUL; sold by Protovision		Runs a cartridge-resident suite of health, speed, alignment, sector, and command tools for 1541-family floppy drives.available
Jul 30, 202664 Doctor
Trilogic / Shareware Plus; sold by Protovision		Tests major Commodore 64 chips, ROMs, interrupts, controls, and external ports with a cartridge and loopback plugs.available
Jul 30, 202664JPX JoyPad eXpander
Nicholas Coplin / 64HDD		Safely translates Sega, NES, SNES, or legacy analog PC controllers for Commodore, Amiga, and Atari-style control ports.unknown
Jul 30, 202664NIC+
RETRO Innovations		Adds wired 10 Mbit Ethernet and RR-Net-compatible networking to C64-family computers, with an optional multi-ROM socket.available
Jul 30, 20268-Bit Classics Five- and Eight-Pin A/V Cable Family
8-Bit Classics		Current composite and S-Video cable options for compatible Commodore computers, with a five-pin composite branch that also serves selected Atari systems.available
Jul 30, 2026AmigaKit Commodore SCART Cable
AmigaKit		A current 1.5-meter five-pin DIN to SCART cable for several Commodore computer families.available
Jul 30, 2026ArcadeForge SLG3000 V2
ArcadeForge		Adds adjustable CRT-style dark lines to a compatible progressive VGA signal before it reaches a modern display.unknown
Jul 30, 2026Baby Prototyping PCB Family
Shareware Plus		Small C64 prototyping boards for the cartridge port, user port, or a combined dual-port project.unknown
Jul 30, 2026BeamRacer
Mad Hackers Lab		VIC-II socket video coprocessor that adds programmable display effects, 512 KB of local memory, and integrated video cleanup to a C64.unknown
Jul 30, 2026BIT-C-128 Video DAC
John R. Carlsen / Syncopated Systems		Converts Commodore 128 80-column RGBI into 15 kHz analog RGB for a compatible display or a separate VGA scaler.unknown
Jul 30, 2026Breadcart
poly.play		Cartridge-port prototyping board with a mini breadboard and jumper leads for building C64 circuits.out-of-stock
Jul 30, 2026BX-87 Mark II
BX Foundry		Provides a weighted, tabletop arcade joystick for Atari 7800 and Atari VCS-style computer control ports.discontinued
Jul 30, 2026C=GPIO
Dorktronic		Historical C64 user-port board providing 32 general-purpose input and output connections.vintage
Jul 30, 2026C=Key Keyboard Adapter
RETRO Innovations		Uses a PS/2 keyboard on supported Commodore computers or converts their original keyboards and optional joysticks for a PS/2-equipped host.available
Jul 30, 2026C128 40/80 Column Video Adapter
Sven Pook		Combines the Commodore 128's separate 40-column analog and 80-column RGBI outputs into a switch-selectable SCART connection.unknown
Jul 30, 2026C128 RGBi to RGBa Adapter
Protovision		Converts the C128's 80-column digital RGBI output to analog RGB and composite sync for a separate video scaler.available
Jul 30, 2026C128 Simple VGA Adapter
Steve J. Gray		A passive buildable adapter that converts C128 80-column RGBI to 15 kHz analog RGB and adds monochrome composite output.diy
Jul 30, 2026C128 VDC 64K RAM Upgrade
idoregesz.hu		Socketed daughterboard that expands the C128 or plastic C128D from 16 KB to 64 KB of VDC video memory.available
Jul 30, 2026C128 Video Mux NTSC
Wright Appy Designs / Pyrofer's Projects		Combines a Commodore 128's 40-column and 80-column video paths in one switchable external adapter.out-of-stock
Jul 30, 2026C128D Keyboard Booster for C64
Marc-Jano Knopp		Adds a buffered external C128D keyboard connection to a Commodore 64 while retaining the original keyboard.diy
Jul 30, 2026C128D Keyboard to C64 Adapter
Protovision		Lets a detachable Commodore 128D keyboard serve as the keyboard for a Commodore 64.available
Jul 30, 2026C64 4164 DRAM Repair Parts
ToTs RETRO and Retroleum		Tested 64K-by-1 4164 DRAM chips for repairing Commodore 64 motherboards that use the eight-chip, 16-pin memory layout.unknown
Jul 30, 2026C64 781220 Dead Test Cartridge
Commodore service ROM; current build by Retro Rewind		Boots before the normal KERNAL to diagnose RAM and ROM faults on a Commodore 64 that cannot reach its startup screen.available
Jul 30, 2026C64 Composite/S-Video RF Modulator Replacement
Matthew Barszcz (mbarszcz-pcb)		Open, through-hole RF-modulator replacement with adjustable C64 luma and chroma output levels.diy
Jul 30, 2026C64 DS3231 and DS1307 RTC Project
Timo Voutilainen		Adds an inexpensive battery-backed real-time clock to a Commodore 64 through the user or cassette port.diy
Jul 30, 2026C64 Joystick Switcher
tebl		Provides an open build for selecting either Commodore 64 control port from one Atari-style joystick, with optional second-fire and autofire circuits.diy
Jul 30, 2026C64 Joystick Switcher and PS/2 Mouse Adapter
Sordan		Swaps both Commodore 64 control ports and adds a PS/2 mouse input compatible with 1351-aware software.available
Jul 30, 2026C64 Joystick to USB Adapter
tebl		Turns as many as two Atari-style digital joysticks or four paddles into USB input devices for a modern computer.diy
Jul 30, 2026C64 WiFi Modem User Port
Sven Petersen		Buildable NodeMCU Wi-Fi modem for the Commodore 64 user port with voltage level shifting and status indicators.diy
Jul 30, 2026C64-to-C128 PSU Adapter Options
CMD Marketplace, Electroware, Keelog, and Commodore4ever		Passive adapter-cable options for powering a Commodore 128 from a suitable modern C64 power supply.available
Jul 30, 2026C64/C128 Diagnostic Cartridge Family
Commodore service ROMs, Sven Petersen open hardware, and multiple current assemblers		Packages 586220, 785260, and related service ROMs as current single-ROM and switchable multi-ROM diagnostic cartridges.available
Jul 30, 2026C64Lover 1541-II/1581 Power Supply
C64Lover		A compact universal-input replacement supply for Commodore 1541-II and 1581 floppy drives.unknown
Jul 30, 2026C64Net WiFi Card
Electronics Is Fun and Bo Zimmerman		Adds Hayes-style Wi-Fi modem access and ZiModem networking functions to a Commodore 64 through the user port.available
Jul 30, 2026C8D Joystick Switcher
Ross (vimfuego) / C8D		Swaps a Commodore computer's two control ports while preserving both digital joystick and analog mouse or paddle signals.vintage
Jul 30, 2026CBMretro MOS 8701 Replacement
CBMretro		Current hand-built replacement for the MOS 8701 clock generator in later PAL and NTSC Commodore 64 boards.available
Jul 30, 2026CGA Four-Player Adapter Family
Protovision / individual Computers / community		Adds two joystick ports to a compatible Commodore user port for four-player games that support the CGA adapter protocol.available
Jul 30, 2026CGA to RGB Convertor
Pyrofer's Projects		Converts digital RGBI into 15 kHz analog RGB and can break out a Commodore 128's 40-column S-Video and audio.out-of-stock
Jul 30, 2026CGA2RGBv2
GGLABS		Converts MDA, CGA, EGA, and Commodore 128 RGBI into 15 kHz analog RGB with selectable sync.out-of-stock
Jul 30, 2026Clockwork64
The Dark Forest		Adds a battery-backed DS3231 clock, external LED time display, date display, and timer to a Commodore 64.out-of-stock
Jul 30, 2026CMD Marketplace C128 40/80-Column Video Cable Family
CMD Marketplace		Current switched cable variants for using the C128's 40-column analog video and 80-column RGBI output with one display setup.available
Jul 30, 2026Commodore 128 15 kHz Display Adapter
C64iSTANBUL		A simple buildable RGBI-to-analog-RGB adapter for 15 kHz-capable displays with a VGA connector.diy
Jul 30, 2026Commodore 1501 Power Monitor Family
Independent Australian builder		External displays for checking the 5 VDC and 9 VAC outputs of Commodore power supplies, with the MkII adding current measurement under load.unknown
Jul 30, 2026Commodore 64 Replacement Power LED Assembly Family
AMI64, Retroleum, and poly.play		Replaces a missing or failed Commodore power indicator with a prewired round or rectangular LED assembly selected for the case and motherboard layout.available
Jul 30, 2026Commodore Auto Switch Box 252652-01
Commodore		A period automatic RF switch box currently offered as new old stock for Commodore 64 and 128 systems.available
Jul 30, 2026Commodore Development Breakout Boards
Commodore4ever; earlier user-port board by Syzygy Systems		Current C64 and C128 user- and cartridge-port boards that expose labeled pins for prototyping and hardware development.available
Jul 30, 2026Commodore4ever A/V Breakout Family
Commodore4ever		Host-specific passive A/V adapters for the VIC-20, C128 family, Plus/4, and Ultimate64 replacement mainboards.available
Jul 30, 2026Commodore4ever ATOM Power Supply Family
Commodore4ever		Protected switched-mode replacement supplies for the C64 and round-connector VIC-20CR, with separate adapters for the C128 and Plus/4.out-of-stock
Jul 30, 2026Commodore4ever WiFi Modem v2.3
Commodore4ever		User-port Wi-Fi modem for reaching Telnet BBS services from several Commodore 8-bit computers.out-of-stock
Jul 30, 2026Competition Pro Retro
Speedlink		Provides a new-production Competition Pro-style microswitch joystick with a nine-pin connector for classic computers.out-of-stock
Jul 30, 2026Diag264 Diagnostic ROM and Harness
Rob Clarke, with OpenC16Cart hardware by SukkoPera		DIY diagnostic ROM and loopback harness for PAL and NTSC Commodore 264-family computers.diy
Jul 30, 2026DomeHub
Modding Dome		Converts supported 17-inch iMac G4 models into M4 Mac mini all-in-ones while retaining the original display, speakers, microphone, power button, and dome.preorder
Jul 30, 2026Dorktronic Joystick and VIC-20 Breakout Boards
Dorktronic		Historical breadboard adapters for prototyping through a Commodore control port or the VIC-20 expansion port.vintage
Jul 30, 2026EasyFlash 1 and EasyFlash 1CR
Thomas Giesel and Daniel Mantione		Open 1 MB C64 flash-cartridge family that can be reprogrammed directly by the computer without an EPROM programmer.diy
Jul 30, 2026EasyFlash 3
Thomas Giesel		Open C64 flash cartridge with seven EasyFlash slots, eight external KERNAL slots, freezer-cartridge support, and USB transfer.available
Jul 30, 2026Elecheap DRAM Tester V5.0
Elecheap Shop		USB-C-powered bench tester for several families of one-bit vintage dynamic RAM.available
Jul 30, 2026Electroware 1541-II/1581 Power Supply Family
Electroware		A current replacement supply for Commodore 1541-II and 1581 drives, offered in Basic, adjustable, and higher-capacity PRO versions.available
Jul 30, 2026Electroware C64 and C128 Power Supply Family
Electroware		Current protected replacement supplies with separate direct-connect C64/VIC-20 and C128 versions.available
Jul 30, 2026Electroware C64 and FDD 2-in-1 Power Supply
Electroware		A single replacement supply that powers a C64 or later VIC-20 together with a 1541-II or 1581 floppy drive.available
Jul 30, 2026Electroware Cassette Port Voltmeter
Electroware		A calibrated cassette-port display that measures the computer's live 5 V rail while preserving the Datasette connection.available
Jul 30, 2026Enhanced Commodore 64 RS232 Serial Adapter v2
HAL's friends		Modern VIC-1011-style user-port RS-232 adapter with status lights, reset, and a software-dependent 9600-baud mode.out-of-stock
Jul 30, 2026EZ-232
Jim Brain		Period user-port adapter for connecting low-speed RS-232 equipment to Commodore 8-bit computers.vintage
Jul 30, 2026Final Cartridge III+ and 101%
Riska B.V.; modern versions by C64iSTANBUL and Daniel Mantione		Current and DIY versions of the C64 and C128 utility cartridge with fast loading, freezer, monitor, BASIC extensions, and desktop software.available
Jul 30, 2026FireUp V2
MicroMiga		Maps an independent second gamepad button to Up while preserving the controller's normal directional Up input.unknown
Jul 30, 2026GenAssister V2
Evie Salomon / BackBit		Connects one six-button Sega Mega Drive or Genesis controller to both C64 or C128 control ports with port switching and extra button mappings.diy
Jul 30, 2026GLINK-LT
GGLABS		Modern VIC-1011A-style user-port adapter with a DB9 RS-232 connection for the Commodore 64 and 128.out-of-stock
Jul 30, 2026GLINK232 / GLINK232T
GGLABS		Expansion-port UART family with SwiftLink-compatible GLINK232 and faster Turbo232-compatible GLINK232T forms.diy
Jul 30, 2026GLINKUSB-LT
GGLABS		User-port USB serial adapter for linking supported Commodore 8-bit computers to a modern host's virtual COM port.out-of-stock
Jul 30, 2026GuruModem
Electronics Is Fun		Adds high-speed Wi-Fi networking, file-transfer protocols, and SD-card storage to computers with a standard RS-232 interface.available
Jul 30, 2026HES MON 64
Human Engineered Software (HES)		Vintage C64 machine-language monitor cartridge with assembly, debugging, memory, and relocation tools.vintage
Jul 30, 2026Highspeed80
poly.play		C64 cartridge that provides an 80-character text display and is intended for use with a modern flat-panel display.available
Jul 30, 2026Individual Computers C64c Replacement Case Family
Individual Computers		Rehouses an original or replacement Commodore 64 motherboard in a newly manufactured C64c shell made with the original injection molds.available
Jul 30, 2026IRQ LED Mod Family
WizardNJ / Shareware Plus / tebl		Replaces the power light with a two-color indicator that shows the computer's IRQ-line state.available
Jul 30, 2026IRQHack64 and IRQHack II
Nejat Dilek, Ozay Turay, and Gotek Retro		Arduino-based C64 cartridge family for fast PRG loading from SD storage or a serial connection.available
Jul 30, 2026ISEPIC Cartridge and Replica
Chip Gracey; replica by DL2DW / Commodore-Bench		DIY replica of the 1985 C64 freezer cartridge that captures RAM, I/O, and CPU state to disk.diy
Jul 30, 2026J-CIA64
Jani Laatikainen		Current FPGA replacement for MOS 6526 and 8521 CIA chips with selectable old- or new-CIA behavior.available
Jul 30, 2026J-CPU64
Jani Laatikainen		Current FPGA replacement for MOS 6510 and 8500 processors, including the documented instruction set and cycle behavior.available
Jul 30, 2026Jason-Ranheim Capture and Re-Capture
Jason-Ranheim Company; Re-Capture by DDI / sys64738		Vintage and DIY C64 freezer cartridge that saves restartable memory snapshots to disk, tape, or EPROM-oriented cartridge files.diy
Jul 30, 2026Jocopod
Technische Maschinenfabrik / Poly.play		Connects a legacy analog PC game-port joystick or steering wheel to a Commodore 64 as paddles or a digital joystick.available
Jul 30, 2026Joystick Extension Cable (DB9)
Generic / AutumnHippo		Adds about 1.7 meters of reach between a compatible nine-pin controller and its vintage computer.available
Jul 30, 2026Joystick Replacement Cable (DB9)
Generic / AutumnHippo		Provides a new 1.7-meter nine-conductor lead for repairing compatible vintage joysticks and controllers.available
Jul 30, 2026Joyswitcher for C64
idoregesz.hu		Swaps both Commodore 64 control ports at the press of a button without moving the connected controllers.available
Jul 30, 2026Keelog C128-to-C64 PSU Adapter
Keelog		Passive cable for powering a Commodore 64 from an external Commodore 128 power supply.available
Jul 30, 2026Keelog C64 and C128 Power Supply Family
Keelog		Protected regional replacement supplies for the C64, later VIC-20, and C128 in Classic, Modern, and current RetroPower enclosures.available
Jul 30, 2026Keelog C64 FDD Dual Power Supply Family
Keelog		Protected dual-output supplies for a C64 or later VIC-20 and a 1541-II, 1571-II, or 1581 floppy drive.available
Jul 30, 2026Kevin Ottum Nu-Brick 64
Kevin Ottum		A repairable metal-cased C64 replacement supply with fused 5 VDC and 9 VAC sections, a power switch, and optional C128 or Plus/4 adapters.unknown
Jul 30, 2026Keyman64
Henning Bekel		Intercepts the C64 keyboard matrix to add programmable shortcuts, macros, remapping, remote control, and sixteen hardware-control lines.available
Jul 30, 2026Link232
RETRO Innovations		Open SwiftLink-compatible expansion-port UART design for connecting supported Commodore computers to DB9 RS-232 equipment.diy
Jul 30, 2026Link232-WiFi
dabone		Combines a SwiftLink-compatible high-speed serial cartridge with an ESP8266 Wi-Fi modem for Commodore 64 and 128 systems.diy
Jul 30, 2026LOAD-IT Datasette Azimuth Indicator
Mills Associates; reverse engineered by e5frog and Retro-Commodore		Adds a hardware azimuth indicator to a Commodore 1530 Datasette so its tape head can be aligned without running a program.diy
Jul 30, 2026LumaFix128
e5frog		Adjustable VIC-IIe interposer intended to reduce jail bars, color stripes, and S-Video checkerboarding on a Commodore 128.available
Jul 30, 2026LumaTOLB
Francis Bernier		VIC-II interposer combining LumaFix video cleanup with a replacement C64 clock-generator circuit.out-of-stock
Jul 30, 2026MasC=uerade Cartridge Converter
RETRO Innovations		Adapts selected simple C64 or C128 I/O cartridges to the VIC-20 expansion port.diy
Jul 30, 2026MechBoard64
MtnBuffalo and AmericanRetro.shop		Replaces a Commodore 64 keyboard with a modern Gateron-switch mechanical assembly in breadbin or C64C cases.available
Jul 30, 2026Micromys V5
individual Computers		Connects a PS/2 mouse to Commodore, Amiga, Atari ST, and Atari 8-bit computers with host-specific mouse, joystick, paddle, and tablet modes.available
Jul 30, 2026MiniFlash
poly.play		Small C64 cartridge that flashes one PRG file of up to 50 KB for immediate cartridge startup.available
Jul 30, 2026NES64
Thomas Pryds / AutumnHippo		Replaces the circuit board in an original or reproduction NES controller so it works as a Commodore 64 gamepad.available
Jul 30, 2026Nordic Replay
individual Computers		Current flashable C64 freezer and development cartridge compatible with Retro Replay, Action Replay, and Nordic Power ROMs.available
Jul 30, 2026Nunchuk64
Robert Grasboeck (djtulan)		Converts two Wii Nunchuk or NES and SNES Classic Mini controllers into the two Commodore 64 control-port inputs.available
Jul 30, 2026OpenC64TapePortBreakOut
SukkoPera		Open PCB that exposes every Commodore 1530 Datassette connector line for Tapuino builds and cassette-port adapters.diy
Jul 30, 2026Original MOS 6510 and 8500 CPU Chips
MOS Technology / Commodore		Tested period 6510 and 8500 processors for repairing a Commodore 64 with an original CPU.vintage
Jul 30, 2026Original MOS 6526 CIA Chips
MOS Technology / Commodore		Tested period 6526, 6526A, and 6526B interface chips for repairing either CIA position in a Commodore 64.vintage
Jul 30, 2026Overlay64
Henning Liebenau		Open internal video-overlay module that displays expansion status and other configured messages over C64 composite or S-Video output.available
Jul 30, 2026OVP64 Inline Over Voltage Protector
Maker not stated; sold by Shareware Plus, Ami64, and Protovision		A compact inline MOSFET protector that disconnects a Commodore 64 supply when the monitored voltage exceeds the safe range.available
Jul 30, 2026PET-N Mechanical Keyboard Project
Andre Fachat		Provides source files for a Cherry-compatible Commodore PET N-type keyboard with printable supports and keycaps.diy
Jul 30, 2026Petskey v1.0
TexElec		Provides a Cherry MX replacement-keyboard PCB for a graphics-keyboard Commodore PET or Tynemouth Mini PET.available
Jul 30, 2026Plexilaser C64 and Ultimate64 Acrylic Case Family
Plexilaser		Provides laser-cut transparent acrylic housings for original C64 motherboards and Ultimate64 replacement-board builds.out-of-stock
Jul 30, 2026Portta Mini CVBS/S-Video to VGA Scaler
Portta		Converts composite or S-Video from a C64 or C128 to selectable-resolution analog VGA output.discontinued
Jul 30, 2026Power Saver HQ OVP Xtreme V3.0
CMD marketplace		A compact semiconductor protector for the 5 VDC and 9 VAC rails of compatible Commodore power supplies.available
Jul 30, 2026PowerUP! 64W PRO V2
The Dark Forest		Replaces the failure-prone linear 5 V regulator board inside two original Commodore 64 wedge power supplies.out-of-stock
Jul 30, 2026ProtoCart Mini Family
Shareware Plus		Compact cartridge-port prototyping PCB and breadboard-bridge kit for C64 hardware development.unknown
Jul 30, 2026Q36 Rapid Fire Modulator
commodore4ever / Sven Petersen		Combines push-button Commodore 64 control-port selection with a dial-adjustable autofire rate.available
Jul 30, 2026QuickSCAN Interface
Digital Audio Concepts		C64 user-port interface and software for capturing images from a 1997 parallel-port Connectix QuickCam.available
Jul 30, 2026Ram-Tester
tops4u		Open ATmega328P bench tester that automatically identifies and checks a broad range of vintage DRAM and 2114 SRAM.diy
Jul 30, 2026Ray Carlsen Custom Commodore Power Supplies
Ray Carlsen		Custom replacement supplies ranging from simple C64 units to multi-connector systems for several Commodore computers and drives.unknown
Jul 30, 2026Retro Computer Shack Commodore Video Cable Family
Retro Computer Shack		Current handmade composite, S-Video, SCART, and luma/chroma cable choices for compatible Commodore computers.available
Jul 30, 2026Retro DE9 Joystick Tester Family
AMI64, Commodore4ever, and Edoardo kinmami		Standalone testers for checking vintage nine-pin joysticks and controllers without relying on a working retro computer.available
Jul 30, 2026Retro Rewind C64/C128 WiFi Modem
Retro Rewind		Current ZiModem-based Wi-Fi modem for Commodore 64 and 128 BBS access, Hayes commands, and incoming connections.available
Jul 30, 2026RetroTINK-2X and 2X Pro
RetroTINK / Mike Chi		Line-doubles standard-definition composite, S-Video, or component video for modern digital displays with no added latency.available
Jul 30, 2026REX 9850 CNC Controller Card
REX, sold by Shareware Plus		Controls stepper motors from a Commodore 64 user port for CNC and other motion-control projects.unknown
Jul 30, 2026RFOUT! RF Modulator Replacement
Arananet RetroProducts		Replaces the C64 RF modulator with composite, optional S-Video, and mono or dual-SID audio connections.out-of-stock
Jul 30, 2026rgbi2rgba
Travis Durf (Markeno76)		A buildable C128 and IBM CGA digital-to-analog video adapter with RGBS, RGBHV, and Commodore A/V pass-through options.diy
Jul 30, 2026RR-Net MK3
Individual Computers		Adds wired Ethernet to a C64 either as a direct cartridge or through the clockport of supported carrier hardware.unknown
Jul 30, 2026Rys MKII
Retro 7-bit		Hosts USB HID mice, keyboards, joysticks, and gamepads on classic Amigas, with more limited C64 and Atari ST modes.available
Jul 30, 2026SaRuMan TED 64K RAM Upgrade
pxlmod		No-solder SRAM daughterboard that expands a Commodore 16 or 116 to 64 KB and can switch back to 16 KB.out-of-stock
Jul 30, 2026SaRuMan VDC 64K Upgrade
pxlmod		Compact, low-power C128 VDC video-memory expansion built around one 64 KB static RAM chip.out-of-stock
Jul 30, 2026saV64 Overvoltage Protector
Heather (SkydivinGirl) and e5frog		A historical relay protector with alternate DC and AC inputs for several Commodore power configurations.discontinued
Jul 30, 2026Sega Mega Drive/Genesis Controller Adapter Family
SukkoPera / Gotek Retro / AMI64		Safely connects a Sega Mega Drive or Genesis controller to a Commodore 64, Commodore 128, or Amiga with configurable fire and jump mappings.available
Jul 30, 2026Shuriken RF Modulator Replacement
Commodore4ever		Replaces the C64 RF-modulator circuitry while retaining composite and S-Video through the computer's A/V port.unknown
Jul 30, 2026Simulant C64/C128 User Port to RS232 Adaptor
Simulant		Internally powered user-port adapter family for connecting a Commodore 64 or 128 to DE9 RS-232 equipment.out-of-stock
Jul 30, 2026SixtyClone Commodore 64 Replica PCBs
Bob's Bits		Bare replica motherboards for rebuilding damaged Commodore 64 boards in four original assembly configurations.available
Jul 30, 2026SmaCK 8701 Clock Generator Replacement
mic72		Historical MOS 8701 replacement with automatic PAL or NTSC selection and an onboard switchable oscillator.discontinued
Jul 30, 2026SNES Controller Adapter for Commodore Machines
The 8-Bit Guy / TexElec		Connects a Super Nintendo controller to the user port of supported Commodore computers for software written to read its serial protocol.available
Jul 30, 2026SNES Controller to Atari/Commodore Adapter
raphnet		Converts a Super Nintendo controller into Atari-style direction and fire signals for tested Commodore, Amiga, and Atari computers.diy
Jul 30, 2026Super VIDEO Board
16x8 Digital Retrovation		Discontinued C64C RF-modulator replacement with rear-panel S-Video and 3.5 mm audio jacks.discontinued
Jul 30, 2026SuperPad64
ninja/dreams / Poly.play		Connects as many as eight standard SNES controllers to a Commodore 64 or 128 through its two control ports.out-of-stock
Jul 30, 2026SuperPLA V4
Individual Computers		Configurable replacement for failed 82S100-based Commodore PLA chips, with documented modes for selected C64, 264-series, PET, CBM-II, and 1551 hardware.unknown
Jul 30, 2026Sven Petersen C64 and C128 A/V Adapter Family
Sven Petersen		Host-specific C64 and C128 breakouts with open eight-pin designs plus an assembled five-pin option for early C64 boards.available
Jul 30, 2026Sven Petersen Commodore Port Breakout Boards
Sven Petersen		Open five-board set for bringing Commodore cassette, user-port, and PET IEEE-488 connections to headers and ribbon cables.diy
Jul 30, 2026Swift-L Internal WiFi Modem
dabone		Adds an internal SwiftLink-compatible ESP8266 Wi-Fi modem to the flat-model Commodore 128 while leaving its cartridge port available.diy
Jul 30, 2026Swift-T Internal WiFi Modem
dabone		Adds an internal SwiftLink-compatible ESP8266 Wi-Fi modem to supported Commodore 64 longboards and Commodore 128DCR systems.diy
Jul 30, 2026tebl C64 Power Saver
Tor-Eirik Bakke Lunde (tebl), based on Ray Carlsen's circuit		A source-available relay board that cuts the C64's 5 V supply above about 5.6 V.diy
Jul 30, 2026TOLB 8701 Clock Generator Replacement
TOLB project		Historical low-power MOS 8701 replacement with separate PAL and NTSC versions and an onboard oscillator.discontinued
Jul 30, 2026TOM USB HID Adapter Family
Electronica4u		Connects USB HID mice, keyboards, joysticks, and gamepads to Commodore, Amiga, and Atari ST-family control ports.unknown
Jul 30, 2026Trap Them Controller
Poly.play		A modified SNES-style controller with a nine-pin Commodore plug and a software-read serial button protocol.out-of-stock
Jul 30, 2026Tynemouth PET Replacement Keyboard
Tynemouth Software		Replaces a Commodore PET 2001 or graphics-style PET keyboard with a compact modern tactile-switch assembly.discontinued
Jul 30, 2026Ultimate64 Programmable LED Strip
1541 Ultimate and community		Adds firmware-controlled RGB lighting inside a C64 case fitted with an Ultimate64 mainboard.diy
Jul 30, 2026Ultimate64 User Port Adapter v2.0
1541 Ultimate		Brings an Ultimate64 replacement board's internal user-port header to a C64-style edge connector with the power rails needed by compatible peripherals.out-of-stock
Jul 30, 2026UNI64 uEliteBoard64 v4
Matthias Lorenz / UNI64		Experimental C64 replacement motherboard with three SID sockets, optional internal storage and sound modules, ROM switching, and extensive test points.preorder
Jul 30, 2026Unijoysticle 2 Family
Ricardo Quesada / Retro Moe		Connects modern Bluetooth gamepads and, on selected models, mice to Commodore, Amiga, and Atari computers.available
Jul 30, 2026Versa64Cart
Bwack and Sven Petersen		Open EPROM cartridge board for making single-ROM, switchable multi-ROM, and diagnostic cartridges for the C64 and C128.diy
Jul 30, 2026VIC-20 Diagnostic Cartridge and Harness Family
Sven Petersen, based on Commodore service software; assembled by several sellers		Tests a VIC-20's keyboard, IEC, user, cassette, and joystick interfaces with a machine-specific cartridge and loopback harness.available
Jul 30, 2026VIC-II2 PAL/NTSC Video Switcher
Perifractic's Retro Recipes and 1STAGE		Open internal C64 modification that switches between installed PAL and NTSC VIC-II chips and includes LumaFix64 video cleanup.diy
Jul 30, 2026Vicky Twenty Commodore VIC-20 Replica PCB
Bob's Bits		Bare replica of the later seven-pin-power VIC-20 Assembly 250403 motherboard.available
Jul 30, 2026WiFiCart
Leif Bloomquist		DIY Commodore 64 wireless-interface project built around a MicroView display.diy
Jul 30, 2026ZGCS Joystick Port Switcher
ZGCS		Adds push-button or controller-triggered port swapping plus four selectable autofire rates to a Commodore 64.available
Jul 29, 2026C64 Shortboard SRAM Replacement Family
Jamarju and assembled-board sellers		Replaces the paired 41464 or 4464 DRAMs on later two-chip C64 boards with a modern SRAM module.available
Jul 29, 2026Commodore 17xx REU Memory Upgrade Kit
ToTs RETRO		Upgrades an original Commodore 1764 REU from 256 KB to 512 KB and supplies parts that can also repair or expand other 17xx REUs.available
Jul 29, 2026Commodore Multimedia Breakout V2
Idoregesz		Breaks a compatible Commodore A/V port out to S-Video, composite video, stereo SID audio, and a stereo mini-jack.available
Jul 29, 2026FM Radio Module with RTC
Timo Voutilainen		Adds a software-controlled FM receiver to a Commodore 64 or 128 through the user port, with an optional real-time clock and station storage.available
Jul 29, 2026GGLABS GRAM/1D and GRAM/4D
GGLABS		Provides 1 MB or 4 MB of geoRAM-compatible cartridge memory for the Commodore 64 and 128.out-of-stock
Jul 29, 2026PenUltimate+ VIC-20 Cartridge Family
Tynemouth Software and TFW8B		Combines configurable VIC-20 RAM, a large built-in software library, diagnostics, fast loading, and optional SD2IEC storage.available
Jul 29, 2026PET 2001-8 6550 RAM Replacement
Gavin Andrews		Replaces all eight kilobytes of hot-running 6550 system RAM in an original PET 2001-8 with one open modern board.diy
Jul 29, 2026ROMulan PET RAMulator
Gavin Andrews		Open PET repair board replacing 32 KB of system RAM and selectable ROMs while adding built-in diagnostics.diy
Jul 29, 2026Shareware Plus GeoRAM 512K
Shareware Plus		Adds 512 KB of bank-switched geoRAM-compatible cartridge memory to a Commodore 64 or 128.available
Jul 29, 2026Super OS/9 MMU
TPUG, Mike Naberezny, and RETRO Innovations		Adds an all-RAM 64 KB memory map to the SuperPET's 6809 side so it can run the preserved Super OS/9 port.available
Jul 29, 2026Tynemouth C16 64K SRAM Upgrade
Tynemouth Software		Replaces the C16's original DRAM and multiplexers with a socketed SRAM module that can select 16 KB or 64 KB operation.unknown
Jul 29, 2026Tynemouth PET ROM/RAM Board
Tynemouth Software		Replaces or diagnoses PET system ROM and RAM, expands 8 KB or 16 KB machines to 32 KB, and offers selectable BASIC and display ROM sets.available
Jul 29, 2026UltiMem
Jim Brain and Marko Makela		Adds banked programmable flash and configurable RAM for storing and launching VIC-20 software.discontinued
Jul 29, 2026VIC-20 Configurable RAM and ROM Cartridges
Jaystonian, Retro Lemon, and community designers		Provides switch-selectable VIC-20 memory layouts with current assembled 35 KB and 37 KB cartridges plus an open 32 KB design.available
Jul 29, 2026VIC-2407 Real-Time Clock and RAM Cartridge
Jaystonian's Retro Shop		Combines switch-selectable 35 KB VIC-20 RAM expansion with a battery-backed real-time clock and 115 bytes of persistent user memory.available
Jul 28, 20268 Bit Stereo Sampler
Digital Audio Concepts / Shareware Plus		Adds stereo 8-bit audio sampling hardware to a Commodore 64.unknown
Jul 28, 2026ARM2SID
ARMSID project		Replaces one SID socket with two or three emulated SIDs, or combines SID emulation with SFX Sound Expander-compatible FM synthesis.available
Jul 28, 2026Cynthcart
Paul Slocum		Turns a C64 or C128 into a stand-alone SID synthesizer with keyboard performance, real-time controls, MIDI support, and optional six-voice stereo.available
Jul 28, 2026Datel MIDI Interface Cartridge
Datel design / Shareware Plus		Connects a Commodore expansion port to external MIDI equipment through MIDI In, Out, and Thru sockets.available
Jul 28, 2026DigiMAX
Digital Audio Concepts		Adds four 8-bit digital audio channels with stereo output through the Commodore user port.unknown
Jul 28, 2026FM-YAM
FM-YAM project		Adds nine channels of OPL2-compatible FM synthesis to a Commodore 64 and can mix SID or other audio into its output.out-of-stock
Jul 28, 2026FPGASID
FPGASID project		FPGA-based pin-compatible 6581 and 8580 replacement with two complete SIDs, six-voice stereo, analog inputs, paddles, and mouse support.discontinued
Jul 28, 2026Lotharek Atari DIN5 Video Adapter Family
Lotharek		Breaks a compatible Atari five-pin monitor output into S-Video, composite video, and audio connections.available
Jul 28, 2026Lotharek C64 Video Adapter DIN6 v2
Lotharek		Breaks a compatible C64 video socket out to S-Video, composite video, and RCA audio.available
Jul 28, 2026MixSID
Henning Liebenau		Open dual-SID board with mixed 6581 and 8580 support, runtime address selection, channel mixing, paddle compatibility, and stereo output.diy
Jul 28, 2026MP3@64
individual Computers		Adds hardware MP3 decoding and stereo audio output to a Commodore 64 through an MMC64 or IDE64 V4.1 host.discontinued
Jul 28, 2026MSSIAH Cartridge
MSSIAH		Combines an integrated MIDI interface with five cartridge-resident SID music applications for sequencing, synthesis, drums, and low-fidelity sample playback.available
Jul 28, 2026Original MOS 6581 and 8580 SID Chips
MOS Technology / Commodore		Period original SID chips restore authentic 6581 or 8580 sound when matched to the computer's motherboard voltage and filter circuit.vintage
Jul 28, 2026P-COVOX v2
Lotharek		Adds a four-channel discrete DAC beneath the PIA chip for higher-quality Atari 8-bit sample and module playback.available
Jul 28, 2026SID Symphony and SID Cart Family
Creative Micro Designs and modern reproducers		Cartridge-port second-SID family represented by current SID Symphony reproductions and a selectable-address 6581 SID Cart.available
Jul 28, 2026SID2SID
MSSIAH		Partially assembled internal board for adding a second matching SID chip at $DE00 or $DF00.available
Jul 28, 2026SIDFX
Lotus Electronics		Adds one or two original SID chips with automatic model detection, selectable mono or stereo addressing, protected power, and a dedicated stereo output.out-of-stock
Jul 28, 2026STEREOinSID
poly.play		Internal stereo SID card sold for several C64-family computers with a connection cable and configuration jumper.out-of-stock
Jul 28, 2026SUX 6400 Sound Ultimate Xpander
SUX 6400 project		Captures audio into a Commodore 64 and plays recordings back in 8-bit digital sound with DigiMaster software.vintage
Jul 28, 2026SwinSID Ultimate
CodeKiller / Hermit		Period enhanced SwinSID replacement adds configurable 6581- and 8580-style sound, readable oscillator and envelope registers, analog input, and paddle or mouse support.vintage
Jul 28, 2026VIC-MIDI
RETRO Innovations		Adds MIDI In, Out, and Thru, RS-232 communications, programmable flash, and UltiMem-compatible RAM expansion to a VIC-20.available
Jul 28, 2026X-SID
CMD marketplace		Compact SwinSID-derived 6581 or 8580 replacement with hardware mode selection and a higher audio-output level.available
Jul 27, 20261050E Floppy Drive Turbo
Lotharek		Upgrades an Atari 1050 disk drive for divisor-6 high speed, 180 KB per side, and flashable firmware slots.discontinued
Jul 27, 20261088XEL
MyTek		Recreates an Atari 8-bit computer on a Mini-ITX motherboard with integrated memory, input, mouse, and video upgrades.diy
Jul 27, 20261088XEL Mouse Port Select
MyTek		Selects which 1088XEL joystick port receives input from its PS/2 mouse.diy
Jul 27, 20261088XLD
MyTek		Recreates an Atari 8-bit computer for an Atari 1050 case with integrated IDE storage, expanded memory, PS/2 input, video, stereo audio, MIDI, and expansion.diy
Jul 27, 2026576NUC+
MyTek		Recreates an Atari 8-bit computer on a compact 4.5-inch motherboard with 576 KB of RAM, PS/2 input, selectable ROMs, and modern daughterboard expansion.diy
Jul 27, 20265cfab 1064M
5cfab		Raises an Atari 600XL from 16 KB to 64 KB with a compact external parallel-bus module.available
Jul 27, 20265cfab 1090XL 320K Memory Card
5cfab		Provides 64 KB of main RAM and 256 KB of RAMBO-compatible extended memory through a 1090XL-family expansion slot.available
Jul 27, 20265cfab 1090XL 80-Column RPP Card
5cfab		Provides 80-column text over HDMI from a Raspberry Pi Pico card installed in a 1090XL-family expansion system.available
Jul 27, 20265cfab 1090XL CX-85 Interface
5cfab		Connects an Atari CX-85 numeric keypad through a 1090XL-family expansion slot with an onboard input handler.available
Jul 27, 20265cfab 1090XL Modernized Reproduction
5cfab		Adds five 1090XL-family expansion slots to an Atari 600XL or 800XL through the rear parallel bus.available
Jul 27, 20265cfab 1090XL OS Extension Card
5cfab		Adds Hias high-speed SIO and Fast Math F+ through a 1090XL-family expansion card.available
Jul 27, 20265cfab 1090XL Z80 CP/M Card
5cfab		Adds an 8 MHz-or-faster Z80, 64 KB of onboard memory, and a beta CP/M environment through a 1090XL expansion slot.available
Jul 27, 20265cfab 1200XL Cartridge Extender
5cfab		Moves the Atari 1200XL cartridge slot outside its recessed tunnel and adds switchable OS 6.42 and BASIC firmware.available
Jul 27, 20265cfab 1200XL MMU Replacement
5cfab		Replaces the Atari 1200XL's model-specific C060609 memory-management chip with a programmed modern logic device.available
Jul 27, 20265cfab 320K XL Memory Upgrade
5cfab		Expands an Atari 600XL or 800XL to 320 KB through the rear parallel bus without opening the computer.available
Jul 27, 20265cfab 800XL Advanced System Board
5cfab		Rebuilds an Atari 800XL around a newly manufactured Revision 1.2 motherboard with bare, programmed-chip, and assembled options.available
Jul 27, 20265cfab Atari 400 Memory Boards
5cfab		Replaces the Atari 400's internal RAM board with either 48 KB or 1056 KB of modern memory.available
Jul 27, 20265cfab Atari 800 Memory Boards
5cfab		Replaces the Atari 800's plug-in memory modules with either 48 KB or 1056 KB of modern RAM.available
Jul 27, 20266502 Plus/4 CPU and RAM Module
Lotharek		Replaces the CPU in Commodore 264-series computers and can add 512 KB of Hannes-compatible expanded memory.discontinued
Jul 27, 2026A2USB
ThorstenBr		Repurposes supported Raspberry Pi Pico Apple II video cards as a USB HID mouse interface.diy
Jul 27, 2026A500 8 MB IDE2
Oleg Mishin / Lotharek		Adds 8 MB of Fast RAM and a bootable 44-pin IDE controller at the Amiga 500 CPU socket.available
Jul 27, 2026A501 Redux
Lotharek		Adds 512 KB of trapdoor RAM and a real-time clock to an Amiga 500 on a compact newly made board.available
Jul 27, 2026A8PicoCart
Robin Edwards		Loads cartridge images and XEX files from USB-managed flash storage through an inexpensive RP2040-based Atari XL/XE cartridge.available
Jul 27, 2026A8Renegade 576XE
A8Renegade		Combines a new custom Atari 8-bit motherboard, 576 KB of memory, UGV II video, and a refurbished original Atari 130XE case and keyboard.out-of-stock
Jul 27, 2026A8Renegade 576XL
A8Renegade		Combines a new custom Atari 8-bit motherboard, 576 KB of memory, and monitor output with an original Atari 600XL case and keyboard.available
Jul 27, 2026ACID STEREO
Lotharek / AcidMaker		Retains the original POKEY while adding FPGA stereo POKEYs, Covox channels, digital mixing, and a high-rate stereo DAC.available
Jul 27, 2026ACSI2STM
Jean-Matthieu Coulon / retro16		Uses an STM32 and SD media as a mature open Atari ST hard-drive emulator with ACSI, disk-image, and GemDrive modes.diy
Jul 27, 2026ALF AD8088 and AD128K
ALF Products		Period 5 MHz 8088 coprocessor card with optional fast memory and an 8087 socket.vintage
Jul 27, 2026Amiga 500 2 MB Chip RAM Module
Lotharek		Upgrades a Revision 8A Amiga 500 motherboard to 2 MB of Chip RAM with a soldered internal module.available
Jul 27, 2026AmSider 2.1
Lotharek		Mounts a 44-pin SD-to-IDE adapter horizontally inside an Amiga 600 or 1200 and adds power, activity, and audible-access indicators.available
Jul 27, 2026Angry Space Invader Dual Joy
Lotharek		Adds two configurable joystick ports, reset control, activity indicators, and an expansion pass-through to ZX Spectrum hardware.discontinued
Jul 27, 2026Apple II 6800 Coprocessor Board
B. T. G. Tan and I. C. Sia		Published twelve-chip Motorola 6800 teaching coprocessor that takes control of the Apple II bus.diy
Jul 27, 2026Apple II MC68020/MC68881 Coprocessor Card
Eric Smith and Richard Ottosen		Published 1985 Apple II coprocessor prototype with a 68020, optional 68881, 32K SRAM, and boot EPROM.diy
Jul 27, 2026Apple2-IO-RPi
TJ Boldt		Connects a Raspberry Pi Zero 2 W to an enhanced Apple IIe for virtual disks, networking, Linux commands, and file transfer.diy
Jul 27, 2026AppleIISd
freitz85		Provides ProFile-style block storage from a raw SD card for enhanced Apple IIe and Apple IIgs systems.diy
Jul 27, 2026Applied Engineering RamFactor
Applied Engineering		Period slot memory and bootable RAM-disk card with optional expansion and battery backup.vintage
Jul 27, 2026Applied Engineering Z-RAM
Applied Engineering		Period internal Apple IIc card combining 256K or 512K of memory with a Z80 processor for CP/M.vintage
Jul 27, 2026ArcadeR Joystick
Commodore		Provides a microswitch joystick with a classic 9-pin plug and autofire for the Commodore 64 Ultimate.out-of-stock
Jul 27, 2026ARROW2JOY-XLD
MyTek		Lets a 1088XLD emulate a joystick with its PS/2 keyboard arrow and trigger keys.diy
Jul 27, 2026Atari 800 RAMROM 2024 Personality Card
5cfab		Replaces the Atari 800 personality module with selectable operating systems, faster floating-point code, and configurable extra memory.available
Jul 27, 2026Atari 800XL 8 x Multi Cart
Stephen Gillespie, based on Pixels Past and James Higgs		Adapts the Pixels Past 8K or 16K EPROM cartridge into an eight-selection homebrew multicart for the Atari 800XL.diy
Jul 27, 2026Atari AV Breakout
A8Renegade		Breaks compatible Atari and Commodore monitor-port signals out to S-video, composite video, and bridged mono audio connectors.available
Jul 27, 2026Atari OS ROM Switcher
Lotharek / Retro Lemon		Selects between two programmed Atari operating-system ROM banks according to the Reset key state at power-on.available
Jul 27, 2026Atari Real Clock (ARC)
Pasiu / SSG and Qcyk / Dial		Adds a battery-backed real-time clock to Atari XL and XE computers as an internal module, pass-through cartridge, or circuit inside another cartridge.diy
Jul 27, 2026Atari XF551 Disk Drive
Atari		Period SIO floppy drive adds double-sided, double-density 5.25-inch storage and faster double-density transfers to Atari 8-bit computers.vintage
Jul 27, 2026AY FPGA Dual AY TurboSound
Lotharek		FPGA-based AY-3-8912 replacement with the original Amstrad sound path and an optional separate three-channel stereo output.available
Jul 27, 2026AY Internal
Lotharek		Adds an internal AY or Yamaha sound generator and stereo output to a ZX Spectrum through a CPU adapter.discontinued
Jul 27, 2026BackBit Pro
BackBit		Uses one microSD cartridge and interchangeable adapters to load software and provide selected storage, cartridge, memory, and diagnostic functions on many vintage computers.available
Jul 27, 2026BISON FPGA DivMMC TurboSound 2xAY
Lotharek		Combines DivMMC-compatible microSD storage, 512 KB of expansion RAM, dual-AY audio, DAC modes, and configurable joystick or mouse input on the ZX expansion bus.available
Jul 27, 2026BlackBird RTC NVRAM
Bartek Swiderski / Lotharek		A newly made real-time-clock and nonvolatile-memory module for the Atari Falcon030.available
Jul 27, 2026BMC64 PCB
Andy Minchin		Packages a Raspberry Pi 3B+ and RP2040 keyboard interface into an original C64 or C64C case as a low-latency BMC64 system.diy
Jul 27, 2026Bob Woolley 1 MB SIMM Upgrade
Bob Woolley		Adds 1 MB of banked RAM to an Atari 1200XL or 800XL with a 30-pin SIMM and custom refresh and bank-selection logic.diy
Jul 27, 2026C64 Component Video Modification
c0pperdragon		Generates configurable YPbPr or RGB from VIC-II bus activity with an FPGA while retaining improved composite and S-Video output.diy
Jul 27, 2026C64 Reloaded MK2
Individual Computers		Rebuilds a Commodore 64 around a preassembled replacement motherboard with automatic chip configuration, static RAM, flash ROM, and dual-SID support.available
Jul 27, 2026C64 User Port Expander
Arcadia by Eye-Box / Shareware Plus		Passive one-to-three Commodore 64 user-port expander with an onboard reset button.out-of-stock
Jul 27, 2026C64 V9958 Graphics Card
Vossi		Adds a Yamaha V9958 or V9938 video processor, 128 KB of dedicated VRAM, RGB output, sprites, and enhanced graphics modes through the expansion port.diy
Jul 27, 2026C64U User Port Adapter
Commodore		Brings the Commodore 64 Ultimate's internal user-port header to an edge connector for user-port peripherals.out-of-stock
Jul 27, 2026Cartridge Xpander 1X
poly.play		Single-position angled C64 cartridge adapter with power switching, reset, an activity LED, and support feet.out-of-stock
Jul 27, 2026Cassiopei v2.0
Jan Derogee		Adds SD-card PRG and TAP loading, a fast loader, Wi-Fi file transfer, and cross-development tools through the cassette port of several Commodore 8-bit families.out-of-stock
Jul 27, 2026CMD HD-4000 Reproduction
ToTs RETRO and COREi64		Licensed, made-to-order recreation of the CMD hard drive with BlueSCSI v2 and externally accessible SD storage.available
Jul 27, 2026Commodore 1541 Device ID Switcher
TheRetroChannel		6522 VIA interposer that changes a Commodore 1541 drive between device IDs 8 through 11 without cutting its original jumpers.available
Jul 27, 2026Commodore 64 Ultimate
Commodore		Recreates a C64 as a complete FPGA-based keyboard computer with original peripheral interfaces plus HDMI, USB, microSD, Ethernet, and Wi-Fi.available
Jul 27, 2026CPC 6128 512 KB Memory Module
Lotharek		Adds 512 KB of SRAM to an Amstrad CPC 6128 or CPC 6128 Plus through the Z80 CPU footprint.available
Jul 27, 2026CPC 6128 Floppy Adapter
Lotharek		Converts the CPC 6128's internal 26-pin floppy connection to a standard 34-pin Shugart interface.available
Jul 27, 2026CPC 6128 Mini-DIN 9 A/V Adapter
Lotharek		Replaces the CPC 6128's six-pin video socket with a Mini-DIN 9 output wired to the Mega Drive 2 A/V standard.available
Jul 27, 2026CS/A65 PET 4032 Replica (Fat40)
Andre Fachat		Builds a PET 4032-compatible mainboard from modular CS/A65 processor, PET I/O, and video cards.diy
Jul 27, 2026CS/A65 VC1581 Replica
Andre Fachat		Builds a Commodore 1581-compatible IEC disk drive from CS/A65 processor and floppy-interface cards.diy
Jul 27, 2026Datel EX64 Reproduction
AMI64 / Datel design		Three-slot C64 and C128 cartridge-port expander with per-slot switching, a fuse, status LEDs, and reset.available
Jul 27, 2026DIAGNOROM
Lotharek		An external fifteen-ROM selector for original Sinclair 48K, 128K, and grey +2 computers, controlled by one button and binary indicator LEDs.available
Jul 27, 2026DivIDE Revised
Lotharek / Velesoft		Adds CompactFlash storage, selectable disk firmware, an LCD, and a five-mode joystick interface to original ZX Spectrum computers.discontinued
Jul 27, 2026DivIDE_AY
Lotharek		Combines CompactFlash storage, four selectable firmware slots, AY sound, stereo output, and two joystick ports on a ZX Spectrum expansion interface.available
Jul 27, 2026DivMMC-USB
Lotharek		Combines DivMMC microSD storage, USB HID input, four ROM slots, snapshot storage, dual-AY audio, and DAC modes in one ZX expansion interface.available
Jul 27, 2026Don Neff 600XL 64K Upgrade
Don Neff / Michigan Atari Magazine		Expands a 16 KB Atari 600XL to 64 KB with two 41464 DRAMs and three wiring changes.diy
Jul 27, 2026DreamBlaster X8GS Special Edition
Serdaco		Adds a Dream-based hardware wavetable synthesizer with licensed Roland GS samples to an ITX-Llama.out-of-stock
Jul 27, 2026DriveRDY
Boris Krizma / Lotharek		Generates the Amiga READY signal so a compatible 3.5-inch PC floppy mechanism can replace an Amiga drive.available
Jul 27, 2026Epyx Fastload Reloaded
The Future Was 8bit		Cartridge fast loader for a Commodore 64 or 128 using an existing SD2IEC device or Commodore 1541-family disk drive.available
Jul 27, 2026eX601n
Boris Krizma / Lotharek		Adds 1 MB of Chip RAM, a battery-backed clock, an Indivision ECS connector, and two A1200-style clock ports to an Amiga 600.discontinued
Jul 27, 2026FreddieCPLD
Sebastian "Candle" Bartkowicz / Lotharek		Replaces the Atari FREDDIE memory-management chip with a CPLD module.discontinued
Jul 27, 2026Furia EC020
Boris Krizma / Lotharek		Accelerates an Amiga 600 with a 68EC020, 68882 FPU, 9.5 MB of Fast RAM, MapROM, and IDE speedup.available
Jul 27, 2026GTIA2RGB
Lotharek / AcidMaker		Adds digital RGB, optional 31 kHz scandoubling, display corrections, and an 80-column overlay while retaining the original GTIA.available
Jul 27, 2026GuMP General MIDI Player
Lotharek		Adds a self-contained SAM2695 General MIDI sound module to an Atari ST-family computer's MIDI output.available
Jul 27, 2026HD-64
Side Projects Lab		Replaces a C64 RF modulator with FPGA-generated 1080p HDMI video and digitized stereo audio while retaining analog video.available
Jul 27, 2026Heron Atari ST 4 MB Family
Bartek Swiderski / Lotharek		Replaces an Atari ST or Mega ST memory subsystem with a 4 MB expansion and a motherboard-specific adapter.available
Jul 27, 2026HxC SD Floppy Emulator Family
HxC2001 and Lotharek		Replaces compatible 34-pin floppy drives with read/write disk images on SD or SDHC media.available
Jul 27, 2026HxC Slim SD Floppy Emulator Family
HxC2001 and Lotharek		Adds read/write SD floppy emulation in compact 34-pin and 26-pin FPC forms.available
Jul 27, 2026HxC USB Floppy Emulator Family
HxC2001 and Lotharek		Streams read-only floppy images from a modern USB host to compatible 34-pin drives or an Amiga external-floppy adapter.available
Jul 27, 2026Hydra SCART Switcher Family
Lotharek		Automatically selects among five, eight, or sixteen powered SCART sources, with expandable Hydra2 variants providing as many as 24 inputs.available
Jul 27, 2026IDE LeyLines
Boris Krizma / Lotharek		Buffers and expands an Amiga 600 or 1200 IDE interface for as many as four CompactFlash, SD, hard-disk, optical, or ZIP devices.available
Jul 27, 2026Incognito Gold
Sebastian Bartkowicz / Lotharek		Transforms an original Atari 800 with configurable memory, XL/XE operation, CompactFlash storage, flash firmware, SpartaDOS X, and a real-time clock.available
Jul 27, 2026ITX-Llama Mainboard
ITX-Llama project		Builds a compact x86 computer for late DOS and early Windows 98 with integrated audio, networking, modern storage, and legacy input support.out-of-stock
Jul 27, 2026JiffyDOS
Mark Fellows and licensed sellers		Licensed replacement computer and disk-drive ROM system that accelerates Commodore serial storage and adds DOS commands.available
Jul 27, 2026JIL Sammer
Lotharek		Adds an SIO-connected General MIDI file synthesizer with external stereo output and Atari audio mixing.available
Jul 27, 2026Jupiter II Expansion Kit
A2Heaven		Adds RGB color, programmable sound, paged memory, a Forth extension ROM, and serial I/O to the Jupiter II computer.out-of-stock
Jul 27, 2026Jupiter II Kit
A2Heaven		Recreates the Jupiter Ace as a complete soldering kit with revised video, reset, keyboard, and expansion hardware.out-of-stock
Jul 27, 2026Jurassic Computing 512 KB VRAM SIMMs
Jurassic Computing		Newly made, assembled 512 KB 68-pin Macintosh VRAM SIMMs in standard and low-latency 70 ns or 70/60 ns variants.available
Jul 27, 2026JUST_POKEY
Lotharek		Replaces a failed or missing Atari POKEY with an updateable FPGA module in the original DIP-40 socket.available
Jul 27, 2026KempAY CPLD
Lotharek		Adds AY sound, stereo output, joystick and mouse modes, reset controls, and edge-connector pass-through to ZX Spectrum-compatible expansion buses.available
Jul 27, 2026Kempston MAX 2
Lotharek		Adds two configurable Atari-style joystick or mouse ports and a pass-through connector to broadly compatible ZX Spectrum expansion buses.available
Jul 27, 2026KRAKEN ZX Spectrum MultiClone
Lotharek		A current ZX Spectrum-compatible motherboard for an original 48K or Spectrum+ case, with real and FPGA Z80 modes, 512 KB of RAM, enhanced video, and extensive audio.available
Jul 27, 2026Llama OPL3 Module
RetroDreams		Adds authentic Yamaha YMF262 OPL3 FM synthesis to an ITX-Llama.out-of-stock
Jul 27, 2026Lotharek 1 MB Atari STE SIMM
Bartek Swiderski / Lotharek		A newly made 1 MB SIMM for the Atari 520STE and 1040STE memory sockets.available
Jul 27, 2026Lotharek AKI Keyboard Interface Family
DarkDK, Andre Bertram, and Lotharek		Adds an internal PS/2 or USB keyboard interface to supported Atari 8-bit computers by interposing at the POKEY socket.available
Jul 27, 2026Lotharek MOS PLA Replacement Family
Sebastian "Candle" Bartkowicz / Lotharek		CPLD replacements for failed PLA chips, currently sold for Commodore 264-series computers and previously made for the C64.available
Jul 27, 2026Lotharek SIO2PC / 10502PC Family
Lotharek		Connects Atari SIO computers to a modern USB host, with 10502PC variants that can also image disks through a physical Atari drive.available
Jul 27, 2026Lotharek SRAM Replacement Family
Lotharek		Replaces Atari 8-bit dynamic RAM with modern SRAM or configurable FPGA-managed PSRAM in three current versions.available
Jul 27, 2026MacEffects SE and SE/30 Transparent Speaker
MacEffects		Replaces the internal speaker in a Macintosh SE or SE/30 with a functional nickel-plated unit using a transparent cone.out-of-stock
Jul 27, 2026MAMLAS RAM / CPU / AY Module
Lotharek		Replaces the Z80 and upper 32 KB of DRAM in a ZX Spectrum 48K, Spectrum+, or Timex TC 2048 while adding AY sound.available
Jul 27, 2026Medusa Rev. B
AcidMaker / Lotharek		Converts composite, S-Video, RGB, RGBI, and VGA-family retro signals to simultaneous digital and analog DVI-I output.available
Jul 27, 2026Mfa2 Apple IIe Emulator family
Mfa2 Workshop		Provides a portable 128 KB enhanced Apple IIe-compatible system with an integrated LCD, speaker, and microSD-based floppy and hard-disk images.available
Jul 27, 2026Micro 8088
Sergey Kiselev		Builds a compact modular IBM PC/XT-compatible computer with an 8088 or NEC V20, up to 640 KB of base RAM, optional upper memory, and 8-bit ISA expansion.diy
Jul 27, 2026Micro-PET
Andre Fachat		Recreates several Commodore PET models on a modern single board with a faster 65816, expanded memory, color VGA graphics, USB input, and SD storage.diy
Jul 27, 2026Mini PET 40/80 Internal
Tynemouth Software		Replaces a failed Commodore PET motherboard with a modern 32 KB board supporting selectable 40- and 80-column modes, several BASIC versions, and original PET interfaces.available
Jul 27, 2026Mini X-Pander Family
Arkanix Labs / RETRO Innovations		Compact two-connector cartridge-port expander with an upright slot and reset button for C64-family computers.available
Jul 27, 2026MT32-Pi
Dale Whinham and RetroDreams		Adds low-latency Roland MT-32 emulation and SoundFont synthesis to an ITX-Llama or MIDI-equipped vintage PC.diy
Jul 27, 2026MyIDE and MyIDE+Flash Family
Sijmen Schouten / Atarimax		Adds IDE hard-disk storage through cartridge, internal flash-OS, and original Atari 800 DIY implementations that predate MyIDE-II.available
Jul 27, 2026ndary Simple XL Video Mod
ndary		Sharpens video on some PAL or NTSC Atari 600XL and 800XL boards by disconnecting one filter capacitor.diy
Jul 27, 2026Netusbee
Lotharek		Adds an RTL8019AS Ethernet interface and an ISP1160 USB controller through the Atari cartridge port.available
Jul 27, 2026Newell 1 Meg XL Memory Upgrade
Newell Industries		Adds a vintage 1 MB banked-memory board to an Atari 800XL or 1200XL with several selectable PIA banking configurations.vintage
Jul 27, 2026NUCplus4 Expansion System
MyTek		Expands a 576NUC+ to 1088 KB and adds a real-time clock, A8PicoCart, SDrive-ng, and optional FujiNet networking and MIDI synthesis.diy
Jul 27, 2026O2 Fixer
Piotr D. Kaczorowski / Lotharek		Replaces the 74LS08 clock logic in Atari XL and XE computers with four separately buffered O2 outputs.available
Jul 27, 2026Original CFFA CompactFlash Card
R&D Automation and Richard Dreher		Period CompactFlash and IDE mass-storage card that preceded the USB-capable CFFA3000.vintage
Jul 27, 2026Original SDrive and SDrive NUXX
C.P.U. and nuxx.net		Emulates writable Atari XL and XE floppy drives from SD storage using the original ATmega8 SDrive design or the NUXX packaging variant.diy
Jul 27, 2026Pasiu 1 MB SIMM Expansion
Pasiu / SSG		Uses a 1 MB 30-pin SIMM and GAL controller to add switchable Compy Shop or Newell/RAMBO banked memory to Atari XL and XE computers.diy
Jul 27, 2026PCF1306P CPLD Replacement
Lotharek		A Xilinx CPLD module replacing specific failed gate-array chips in late ZX Spectrum 48K, 128K, and grey +2 computers.available
Jul 27, 2026PENGUIN BIS PS/2 Keyboard Adapter
Lotharek		Adds a PS/2 or PS/2-compatible USB keyboard to a ZX Spectrum 48K or Spectrum+ through an internal keyboard-interface board.available
Jul 27, 2026petSD+
Nils Eilers and petSD+ contributors		Discontinued SD-card mass-storage device for Commodore PET computers with an IEEE-488 bus.vintage
Jul 27, 2026Pico Micro Mac (v2)
Matt Evans and Ron McAdams		Runs a purpose-built Macintosh 128K emulator on a Raspberry Pi Pico with monochrome VGA and USB keyboard and mouse input.available
Jul 27, 2026PicoRC Macintosh PicoPSU Adapters
dekuNukem		Open, reversible Pico ATX power-adapter family for the Macintosh 128K, 512K, Plus, SE, and SE/30.available
Jul 27, 2026PWR3 Atari 8-bit Power Supply
Lotharek / Mean Well		Provides a modern regulated 5 V, 3 A power supply for explicitly supported Atari XL and XE computers.available
Jul 27, 2026QuadPortIEC
RETRO Innovations		Open four-port Commodore IEC hub with a switch that can hide each attached branch from bus attention.available
Jul 27, 2026RAD Expansion Unit
Frenetic		Uses a Raspberry Pi cartridge to emulate up to 16 MB of REU memory or up to 4 MB of GeoRAM-compatible memory on a C64 or C128.available
Jul 27, 2026Radio-86RK remake
Sergey Kiselev		Recreates the 1986 Soviet Radio-86RK home computer on one board with an Intel 8080A, 32 KB of SRAM, integrated keyboard, monochrome composite video, cassette, serial, and parallel interfaces.diy
Jul 27, 2026RamFAST/SCSI
Sequential Systems		Period high-speed SCSI controller with an onboard processor, DMA, cache, and ROM-based disk utilities.vintage
Jul 27, 2026Rapidus 65C816 Accelerator
Sebastian "Candle" Bartkowicz / Lotharek		Replaces the Atari 8-bit CPU with a 20 MHz WDC 65C816 accelerator backed by fast SRAM, SDRAM, flash, and software-selectable modes.discontinued
Jul 27, 2026RC6502 Apple 1 Replica
tebl		Recreates an expandable Apple-1-compatible computer as either a compact single board or a set of functional cards on a backplane.diy
Jul 27, 2026Replica 1 Plus
Briel Computers and ReActiveMicro		Recreates the Apple-1 as a buildable 6502 computer with composite video, modern power, and PS/2, adapted USB, or ASCII keyboard input.available
Jul 27, 2026RetroConnector USB Gaming Adapter
RetroConnector and Retro6502		Connects a driverless USB HID game controller to an Apple II game-port interface.available
Jul 27, 2026RetroNynjah C64 Cartridge Relocator
RetroNynjah		Open 90-degree cartridge adapter that brings a C64 cartridge upright and can include a reset button.available
Jul 27, 2026REU Grande
RETRO Innovations and Adrian Gonzalez		Adds a switch-selectable 256 KB to 16 MB DMA RAM Expansion Unit compatible with Commodore 1700, 1750, and 1764 software.available
Jul 27, 2026RFOFF C64 and C128
TheRetroChannel		Replaces the RF modulator in supported C64 and C128 systems to improve composite and S-Video output and add configurable rear connections.available
Jul 27, 2026RGB2VGA-XLD
MyTek		Converts Sophia or VBXE RGB video to VGA inside a 1088XLD.diy
Jul 27, 2026RM 800XL
Revive Machines		Reinterprets the Atari 800XL with RISC and FPGA processors, original-style peripheral connections, HDMI, USB storage and controllers, SD storage, and USB-C power.unknown
Jul 27, 2026RocketChip
Bits & Pieces Technology		Period 5 MHz 65C02 CPU replacement for the Apple II, II Plus, IIe, and IIc.vintage
Jul 27, 2026SamWave Wavetable Module
Lotharek		Adds SAM2695 General MIDI synthesis to a sound card with a compatible Wave Blaster header.available
Jul 27, 2026SC114, SC126, SC130, and SC720 Motherboards
Small Computer Central		Combines a working Z80 or Z180 computer with RC2014-compatible expansion sockets on one buildable motherboard.diy
Jul 27, 2026SC691, SC791, SC792, and SC794 Modular Computers
Small Computer Central		Builds complete RomWBW and CP/M computers from matched 40-pin or 80-pin RCBus backplanes and modules.diy
Jul 27, 2026SCART A/V Breakout Adapter Family
Lotharek and other makers		Current passive adapters that expose S-Video, composite video, and stereo audio connections from a SCART path.available
Jul 27, 2026SCSI2SD V5 Family
SCSI2SD project and resellers		Retired family of SD-backed SCSI drive emulators that includes internal 50-pin and direct-attach DB-25 hardware.available
Jul 27, 2026SD2PET Future
Tynemouth Software and The Future Was 8bit		External SD-card storage device that plugs into the IEEE-488 port of supported Commodore PET and CBM computers.out-of-stock
Jul 27, 2026SDrive-ARM
Alexey Spirkov (fintros)		Reimplements SDrive around a 48 MHz Cypress PSoC ARM controller with microSD, capacitive controls, eight drives, and cassette emulation.diy
Jul 27, 2026Shareware Plus 1541 Trackdisplay
Gero Ihde and Shareware Plus		Assembly kit that adds a numeric track or sector display to supported Commodore floppy drives.unknown
Jul 27, 2026SIDE2 and SIDE3 Cartridge Family
Sebastian "Candle" Bartkowicz / FlashJazzCat / Lotharek		Adds cartridge-based CompactFlash or SD storage, SpartaDOS X, a real-time clock, and loader functions to Atari 8-bit systems.discontinued
Jul 27, 2026Sidekick64
Frenetic		Uses a Raspberry Pi cartridge to emulate memory, sound, cartridges, ROMs, and file-loading functions across several Commodore 8-bit systems.diy
Jul 27, 2026SIO Splitter
Lotharek / Retro Lemon		Expands one Atari SIO connection into four peripheral ports with optional external power and bus-activity indicators.available
Jul 27, 2026SIO2Arduino
Whizzo Software		Turns supported Arduino hardware and a microSD reader into a single Atari 1050-compatible SIO disk emulator.diy
Jul 27, 2026SLAM128 Revised 2K24
Mark Smith, Zaxon, and Lotharek		A revised CPLD ULA replacement for the original ZX Spectrum 128K and grey Spectrum +2.available
Jul 27, 2026SmartDisk II
vibr77 and innoelement		Emulates Disk II, UniDisk 3.5, and SmartPort storage from an SD card with an STM32F411.available
Jul 27, 2026Sony PVM SCART-to-BNC Adapter
Lotharek		Adapts a SCART video connection to the BNC inputs used by Sony PVM, BVM, and similar professional monitors.available
Jul 27, 2026SpectreAV
Candle O'Sin / Lotharek		Replaces the 4050 video buffer and routes configurable conditioned video signals to the Atari's output connector.available
Jul 27, 2026SuperKernal 36-in-1
SuperKernal project		Replaces a C64 or SX-64 KERNAL ROM with 36 selectable ROM or program slots, file browsing, firmware updates, and optional WLAN and FTP access.vintage
Jul 27, 2026SuperULA
Lotharek		Replaces the ULA, video RAM, upper RAM, and RF modulator in Issue 2 through 6 ZX Spectrum 48K boards while adding modern video, sound, memory, and machine modes.preorder
Jul 27, 2026SwinSID Nano
Swinkels / Lotharek		Current Lotharek redesign of the compact AVR-based replacement for a Commodore 64 SID sound chip.available
Jul 27, 2026SYSOP-64
Bloodmosher		Adds a DE10-Nano Linux coprocessor, 1080p HDMI video, DMA, storage, networking, and a framebuffer overlay to a Commodore 64.diy
Jul 27, 2026SystemEmbedded 1088 KB SRAM Module
pancio / SystemEmbedded.eu		Publishes an experimental 1024 KB plus 64 KB SRAM expansion board for the Atari 600XL and 800XL.diy
Jul 27, 2026TCBM2SD
Maciej YTM/Elysium Witkowiak		Adds SD mass storage to Commodore 264-series computers and can replace the paddle cartridge in a real 1551 drive.diy
Jul 27, 2026TeensyROM+
Travis' Sensorium		Combines ROM and program loading, MIDI, Ethernet, NFC launching, remote control, a real-time clock, and REU functions in a Teensy 4.1 cartridge.available
Jul 27, 2026The!Cart
Mega-Hz and The!Cart contributors		Reprogrammable multi-mode cartridge for Atari XL and XE computers, prepared with modern-host and Atari-side tools.vintage
Jul 27, 2026TIKUS USB Adapter 2.0
Lotharek		Adapts a USB mouse or digital USB joypad to supported Amiga, Atari ST and STE, or Commodore 64 GEOS mouse ports.available
Jul 27, 2026TT Design ADB Optical Mouse Boards
TT Design		Replaces the ball mechanism in an original Apple ADB Mouse or ADB Mouse II with an adjustable optical sensor while retaining the ADB interface.out-of-stock
Jul 27, 2026TT Design Macintosh SE and SE/30 Power Supplies
TT Design		Modern replacement power-supply boards for Macintosh SE and SE/30 Apple, Sony, and ASTEC enclosures, with assembled, DIY, Pico ATX, and separated-rail options.available
Jul 27, 2026Turbo Chameleon V2
Individual Computers		Combines a C64 accelerator, VGA output, REU and GeoRAM memory, SD storage, dual 1541 emulation, input adapters, and cartridge emulation in one FPGA cartridge.out-of-stock
Jul 27, 2026uCassette and MP32C64 Audio Interface Family
AMI64 and related makers		Cassette-port interfaces that load tape audio from a phone, tablet, or other player into supported Commodore computers.available
Jul 27, 2026Ulti-PET
Andre Fachat		Builds an integrated modern PET-compatible computer with selectable PET models, accelerated operation, enhanced color video, storage, audio, and current input.diy
Jul 27, 2026UltraSatan Family
Jookie / Lotharek		Replaces an Atari ACSI hard disk with SD or microSD media in external, direct-plug, or internal Mega ST-family forms.available
Jul 27, 2026Unified Retro Keyboard
Dave (osiweb)		Replaces an Apple II or II Plus keyboard and can also provide ASCII keyboard input for an Apple-1 or Replica 1.available
Jul 27, 2026VBXE 2.1 Family
Tomasz Piorek, Candle O'Sin, and Lotharek		Adds RGB output, enhanced graphics modes, a blitter, and true 80-column text to supported Atari 8-bit computers.available
Jul 27, 2026VIC-20 Final Expansion 3
Diddl, e5frog, and community		Vintage VIC-20 multifunction cartridge combining configurable RAM, flash storage, SD2IEC storage, a real-time clock, and a launcher menu.vintage
Jul 27, 2026VIC-II Kawari
Randy Rossi		Replaces a breadbin C64 VIC-II with an FPGA implementation offering configurable video, extra VRAM, new graphics modes, and optional digital or RGB output.available
Jul 27, 2026Vulture 14 MB Falcon Memory Expansion
Lotharek		Expands an Atari Falcon030 to 14 MB with a dedicated board populated by 50 ns DRAM.discontinued
Jul 27, 2026WindHover SuperRam Modifications
Jay Torres, Jerry Rombert, and The WindHover Project		Documents period DIY memory conversions that give an Atari 400 48 KB plus a banked 16 KB or an Atari 800 a 288 KB SuperRam configuration.diy
Jul 27, 2026X-Pander 3
RETRO Innovations		Open cartridge-port expander with three independently controlled positions, configurable bus signals, and a reset switch.available
Jul 27, 2026XEL-CF3 CompactFlash Interface Family
MyTek and ebiguy		Adds an internal CompactFlash hard drive to the 1088XEL through its MPBI expansion interface.diy
Jul 25, 20261200XL-1MB SRAM Upgrade
MyTek and tf_hh		Replaces the Atari 1200XL memory subsystem with 1088 KB of SRAM.diy
Jul 25, 20262364-to-27Cxxx EPROM Adapter
Retro Electronics		Replaces a Commodore 2364 ROM with a readily available 27C64, 27C128, 27C256, or 27C512 device.available
Jul 25, 2026APE Warp+ OS 32-in-1
Atarimax		Replaces the Atari XL or XE operating-system ROM with a switchless 32-image OS selector and high-speed SIO features.available
Jul 25, 2026Atarimax Maxflash System
Atarimax		Provides blank flash cartridges and a USB programmer for building reusable Atari 8-bit multicarts.available
Jul 25, 2026Atarimax MyIDE-II
Atarimax		Adds CompactFlash storage, cartridge-image loading, and onboard flash and SRAM to Atari XL and XE computers.available
Jul 25, 2026Atarimax SIO2PC/ProSystem Interface
Atarimax		Connects Atari 8-bit SIO computers and disk drives to a modern host for peripheral emulation and disk transfer.available
Jul 25, 2026Atarimax/ABBUC USB Cartridge
ABBUC e.V. and Atarimax		Adds a two-port USB host interface for supported keyboards, controllers, mice, and other driver-backed devices.available
Jul 25, 2026ATX2XT Power Supply Adapter
Retro Electronics		Adapts a modern ATX power supply to an IBM XT and recreates the missing -5 V rail.available
Jul 25, 2026C64 Video Enhancement (Analog Only)
c0pperdragon, assembled by Retro Electronics		Open RF-modulator replacement that improves the C64's original luma, chroma, and composite video signals.available
Jul 25, 2026C64/C128 586220 Diagnostic Harness Family
Sven Petersen and Commodore service design; assembled by several sellers		Adds the loopback modules needed for complete 586220 C64 or 785260 C128 port and interface diagnostics.available
Jul 25, 2026Commodore 1581 PC Floppy Adapter
Retro Electronics		Connects a standard 3.5-inch PC floppy mechanism to a Commodore 1581 disk drive.available
Jul 25, 2026Commodore 1581 Replica
Retro Electronics		Assembled replica controller board for building a Commodore 1581-compatible 3.5-inch disk drive.out-of-stock
Jul 25, 2026Commodore CS/A Bus Adapter Family
Andre Fachat		Connects one CS/A65 expansion card to a Commodore 64 expansion port or beneath a PET's socketed 6502.diy
Jul 25, 2026Commodore IEEE-488 Interface Cartridges
Commodore		Period cartridge interfaces connect a C64 or VIC-20 to PET-style parallel disk drives, printers, modems, and other IEEE-488 equipment.vintage
Jul 25, 2026Commodore User-Port USB Interface
Andre Fachat		Adds experimental USB host and device hardware through Commodore user and cassette ports.diy
Jul 25, 2026Compaq Portable III Battery Module
Sergey Kiselev		Open replacement battery module for the Compaq Portable III using a CR2477N coin cell.diy
Jul 25, 2026Flock Floppy and RTC Family
Sergey Kiselev / Weird Electronics		Adds a two-drive floppy controller and DS1302 real-time clock to RC2014 and RCBus systems.available
Jul 25, 2026Glitch Works XT-IDE rev 4
Jonathan Chapman / Glitch Works		Open ISA controller that connects ATA or IDE drives to an XT-class computer.available
Jul 25, 2026Happy 1050 Upgrade
Atarimax / 5cfab		Upgrades an Atari 1050 disk drive with true double density, faster backup operations, and protected-disk support.available
Jul 25, 2026IBM PS/2 Floppy Drive Adapter
Retro Electronics		Adapts the powered 34-pin floppy cable in compatible IBM PS/2 systems for a standard floppy drive or Gotek.available
Jul 25, 2026Intel 8086 CPU Tester
Retro Electronics		Standalone USB-powered tester for checking DIP-40 Intel 8086 processors outside a computer.out-of-stock
Jul 25, 2026ISA 8-Bit Ethernet Controller
Sergey Kiselev / Weird Electronics		Open RTL8019 Ethernet card that brings NE2000-compatible networking to 8-bit ISA computers.diy
Jul 25, 2026JOY2PIC
MyTek and Daniel Serpell		Programs supported PIC microcontrollers from an Atari 8-bit computer through a joystick port.diy
Jul 25, 2026Kung Fu Flash
Kim Jorgensen		Open microSD cartridge that emulates many C64 and C128 cartridge formats and loads programs and disk images.available
Jul 25, 2026LumaFix64
e5frog		Adjustable VIC-II interposer intended to reduce vertical jail bars and S-video chroma artifacts.available
Jul 25, 2026Monster FDC
Sergey Kiselev / Weird Electronics		Open ISA controller with two floppy controllers for up to eight drives, plus optional serial and BIOS hardware.diy
Jul 25, 2026MouseTARI
MyTek		Converts a PS/2 mouse into Atari 8-bit or Atari ST quadrature mouse signals.diy
Jul 25, 2026PET816 Accelerator
Andre Fachat		Replaces a socketed 6502 with a W65816 running at up to 10 MHz, backed by fast RAM and programmable flash ROM.diy
Jul 25, 2026Pi1541
Pi1541 project		Cycle-exact Commodore 1541 disk-drive emulation using a Raspberry Pi and SD-card disk images.available
Jul 25, 2026PS/2-to-XT Keyboard Converter Family
Chuck(G), Sergey Kiselev, and Retro Electronics		Converts compatible PS/2 or AT keyboards for IBM PC and XT keyboard ports.available
Jul 25, 2026RAMBO XL-II
MyTek		Recreates the RAMBO 256 KB memory upgrade for Atari 800XL and 1200XL computers.diy
Jul 25, 2026Retro Electronics Rotary Multi-ROM
Retro Electronics		Socketed rotary-switch ROM board sold with either eight C64 KERNALs or a mixed C64 and 1541 diagnostic set.available
Jul 25, 2026RTC8088
Aitor Gomez Garcia and Sergey Kiselev / Weird Electronics		Open 8-bit ISA real-time clock card for PC/XT systems without a built-in battery-backed clock.available
Jul 25, 2026SCSI-64 Project Family
Andre Fachat		Adds SCSI disk hardware to a Commodore 64 through a CS/A adapter, with experimental external IEC-drive variants.diy
Jul 25, 2026SD2IEC Family
sd2iec contributors and hardware makers		Family of IEC storage devices that lets supported Commodore computers access files and disk images on SD or other removable media.available
Jul 25, 2026SDrive-Simple-II Family
MyTek, Dropcheck, and Lotharek		Provides open internal and currently assembled external SD-based SIO disk-emulator variants for Atari 8-bit computers.available
Jul 25, 2026Sergey ISA Floppy and Serial Controller
Sergey Kiselev		Open ISA card combining a two-drive floppy controller, RS-232 serial port, and optional BIOS ROM.diy
Jul 25, 2026Sergey ISA OPL2 Card
Sergey Kiselev		Open ISA sound-card design using Yamaha OPL2 hardware for AdLib-compatible FM synthesis.available
Jul 25, 2026Sergey ISA POST Card
Sergey Kiselev		Schematic-only ISA Port 80h diagnostic display for troubleshooting PC hardware.diy
Jul 25, 2026Sergey ISA Super VGA
Sergey Kiselev		Open Trident TVGA9000i VGA card for 8-bit ISA computers, including the original IBM PC and XT.diy
Jul 25, 2026Sergey Z80 CPU and 512K Memory Module Family
Sergey Kiselev / Weird Electronics		Combines a Z80 CPU, 512 KiB Flash, 512 KiB SRAM, clock, reset, and RomWBW paging on one modular card.available
Jul 25, 2026SIO2SD
Jakub Kruszona-Zawadzki and contributors		Emulates Atari 8-bit disk drives from SD or MMC cards through the SIO port.available
Jul 25, 2026SKS64 Switchless Kernal Switcher
bwack		Open ROM adapter that selects alternate C64 KERNALs through the RESTORE key and indicates the active bank with an LED.diy
Jul 25, 2026StrikeLink WiFi Modem
Retro Electronics		User-port Wi-Fi modem for connecting a Commodore 64 or 128 to Internet BBS services.available
Jul 25, 2026SuperSoft Landmark Diagnostic ROMs
SuperSoft / Landmark, supplied by Retro Electronics		Programmed replacement ROM variants for diagnosing IBM PC, XT, and AT motherboard faults.available
Jul 25, 2026Tapecart SD
Kim Jorgensen		Cassette-port microSD loader for launching C64 TCRT and PRG files through an on-screen browser.available
Jul 25, 2026Tapuino
Tapuino project		Arduino-based SD-card datasette emulator family for Commodore cassette ports, with TAP writing on the Mini variant.available
Jul 25, 2026Tiny Z80
Sergey Kiselev		Business-card-sized RC2014-compatible Z80 computer with 1 MiB of memory and integrated serial and parallel I/O.diy
Jul 25, 2026XS1541
Nils Eilers and Andre Fachat		Bridges a modern computer over USB serial to Commodore IEEE-488 and IEC equipment, or supplies host-backed storage to a Commodore computer.diy
Jul 25, 2026ZoomFloppy and XUM1541 Family
Nate Lawson, RETRO Innovations, and compatible-board makers		USB interfaces that connect Commodore IEC disk drives to a modern computer for disk transfer and archival.available
Jul 24, 202616C550 and 16C2552 UART Module Family
Z80 Kits		Adds one or two modern 115200-baud serial ports supported by RomWBW.available
Jul 24, 20262soniq and 4soniq
Manila Gear		Exposes two or four independent output channels from the Apple IIgs Ensoniq sound chip.available
Jul 24, 202632K / 64K RAM Module
Z80 Kits		Adds up to the Z80's full 64K addressable RAM with selectable start address.available
Jul 24, 20264GS RAM Card
Briel Computers		Adds 4 MB of DMA-compatible memory to a ROM 01 or ROM 03 Apple IIgs.available
Jul 24, 2026512K ROM 512K RAM Module
Z80 Kits		Adds banked memory for running RomWBW, CP/M, and Z-System.available
Jul 24, 202665C816 to 65C02 Adapter Board
A2Heaven		Adapts a W65C816 processor to a 65C02-compatible socket while generating the missing clock and synchronization signals.out-of-stock
Jul 24, 20268x8 LED Matrix Display Module
Shiela Dixon		Adds a directly programmed 8x8 LED display for graphics and animation.available
Jul 24, 2026A2 ATX
Joe's Computer Museum		Adapts a modern PicoPSU and external power brick to the Apple II, II Plus, and IIe.available
Jul 24, 2026A2 Joystick Multi-Adapter
Joe's Computer Museum		Connects and switches among four Apple II-compatible joysticks through a computer's external DE-9 game port.available
Jul 24, 2026A2CDVI v2.5
Mr. Tech Gadget, Mike Neil, and Joe's Computer Museum		Converts the digital video expansion signals from an Apple IIc-family computer or Laser 128 to an HDMI-compatible output.available
Jul 24, 2026A2DVI v2.0 and v4.4
Ralle Palaveev, Thorsten Brehm, and Joe's Computer Museum		Generates digital video from Apple II display memory through an HDMI-compatible connector.available
Jul 24, 2026A2io Bluetooth Game Port Receiver
CraftyMech		Uses a phone, tablet, or laptop as a bridge from modern wireless controllers to an Apple II game port.out-of-stock
Jul 24, 2026A2jc Apple II 16-pin to 9-pin Joystick Adapter
CT6502		Connects a 9-pin Apple II joystick or A2io receiver to the internal 16-pin game I/O socket.out-of-stock
Jul 24, 2026A2Pico
Oliver Schmidt and Ralle Palaveev		Open hardware and software platform for building Raspberry Pi Pico-based Apple II peripheral cards.available
Jul 24, 2026A2SCSI-A03
GGLABS		Recreates Apple's Revision C SCSI card with termination power and onboard active termination for improved drive compatibility.out-of-stock
Jul 24, 2026A3 ATX
Joe's Computer Museum		Adapts a modern PicoPSU and external power brick to the Apple III and Apple III Plus.available
Jul 24, 2026A3660
John "Chucky" Hertell and AMIGAstore.eu		Open 68060 processor card for Amiga 3000 and 4000 computers.available
Jul 24, 2026ALF MC1 Clone
A2Heaven		Recreates the ALF Apple Music Synthesizer for composing and playing music from standard notation on an Apple II.out-of-stock
Jul 24, 2026Amiga 3000 ZIP2SIMM Adapter
Matthias Munch		Replaces the Amiga 3000's ZIP-package Fast RAM with standard 72-pin SIMMs.out-of-stock
Jul 24, 2026Apple Disk II ReAnalog Card and Motor Control Board
CT6502 and Karl Asseily		Rebuilds the electronics inside an original Disk II drive with a cleaner analog path, keyed cabling, write protection, and easier head access.available
Jul 24, 2026Apple Disk II ReInterface Card
CT6502 and Karl Asseily		Recreates the Apple Disk II controller card with modern components and selectable 16-sector or 13-sector firmware.available
Jul 24, 2026Apple II 3.5 Disk Controller Card
Ultimate-Micro.com and ReActiveMicro		Recreates Apple's controller for attaching 3.5-inch Apple floppy drives to slotted Apple II computers.available
Jul 24, 2026Apple II MIDI Interface
A2Heaven		Recreates a Passport-compatible MIDI interface for music software on Apple II computers.available
Jul 24, 2026Apple II New-Old-Stock 16K Memory Upgrade
Unknown original manufacturer		Vintage 16K Apple II memory board with power, read, and write activity LEDs.vintage
Jul 24, 2026Apple II Plus Rev 7 RFI Motherboard
ReActiveMicro		Replaces an Apple II or II Plus motherboard with a complete Rev 7 RFI clone.available
Jul 24, 2026Apple II Rev 0 Motherboard
Mike Willegal		Provides a bare recreation of the original Apple II Revision 0 motherboard for restoration or a ground-up build.available
Jul 24, 2026Apple II RGB Kit
A2Heaven		Adds RGBS and SCART video output to supported Apple II logic boards.out-of-stock
Jul 24, 2026Apple II S.A.M. Speech Synthesizer
A2Heaven		Adds Software Automatic Mouth speech synthesis hardware to an Apple II.out-of-stock
Jul 24, 2026Apple II Slot Extender
A2Heaven		Moves an Apple II peripheral card outside the case for repair, development, and testing.out-of-stock
Jul 24, 2026Apple II USB Keyboard Adapter
A2Heaven		Lets supported original-style Apple II computers use a USB keyboard.out-of-stock
Jul 24, 2026Apple II VGA Scaler
A2Heaven		Converts Apple II, II Plus, Europlus, and IIe video for display on a VGA monitor.out-of-stock
Jul 24, 2026Apple IIc Backlit Mechanical Keyboard
MacEffects, JCM-1, A2Heaven, and 8bittees		Modern microcontroller-based Apple IIc keyboard with mechanical switches, configurable backlighting, and a read/write activity indicator.out-of-stock
Jul 24, 2026Apple IIc Low-Profile Keyboard Stiffener
Elmars Ositis		Restores spring-clip keyboard support while leaving clearance for internal Apple IIc expansion boards.available
Jul 24, 2026Apple IIc Plus Universal PSU
ReActiveMicro		Replaces the power-supply PCB inside the Apple IIc Plus metal PSU enclosure with a modern universal-input supply.available
Jul 24, 2026Apple IIc ROM 4X / IIc Plus ROM 5X
Michael Guidero and Infinity Products		Improved firmware for the Apple IIc and IIc Plus, offered as a current ROM programming service.available
Jul 24, 2026Apple IIc VGA
A2Heaven		Converts the Apple IIc family's digital video expansion output to 720x480 VGA.out-of-stock
Jul 24, 2026Apple IIe Enhancement Kit
ReActiveMicro		Upgrades an original Apple IIe with a 65C02 processor and the Enhanced IIe system and video ROMs.available
Jul 24, 2026Apple IIe Mechanical Keyboard
MacEffects		Modern full replacement keyboard for the Apple IIe using Matias ALPS-style tactile and clicky switches.out-of-stock
Jul 24, 2026Apple IIgs 8MB RAM/ROM
A2Heaven		Combines 8 MB of fast static RAM with an optional 512K boot ROM and built-in IIgs debugging software.out-of-stock
Jul 24, 2026Apple IIgs MIDI Interface
A2Heaven		Connects an Apple IIgs serial port to MIDI instruments using Apple A9M0103-compatible software.out-of-stock
Jul 24, 2026Apple IIgs ROM 00 to ROM 01 Upgrade Adapter
ReActiveMicro and Garrett's Workshop		Converts a ROM 00 Apple IIgs to ROM 01 with a removable replacement ROM module.available
Jul 24, 2026Apple IIgs VGA Adapter
Manila Gear		Adapts Apple IIgs analog RGB and composite sync to a 15 kHz-capable VGA connector.available
Jul 24, 2026Apple III Power Supply Cap Kit
Joe's Computer Museum		Supplies replacement capacitors for the Astec AA11190 and AA11190-B Apple III power supplies.available
Jul 24, 2026AppleIIGSxROM
A2Heaven		Adds a reprogrammable, four-bank ROM adapter for ROM 0 Apple IIgs systems.out-of-stock
Jul 24, 2026AppleSqueezer GS
Niek van Suchtelen		Combines a 14 MHz 65816 accelerator, 14 MB memory expansion, HDMI output, RAM disk, and SD-backed drives for the Apple IIgs.out-of-stock
Jul 24, 2026ARMSID
ARMSID project		Microcontroller-based plug-in replacement for a C64 or C128 6581 or 8580 SID with software configuration, updateable firmware, and analog control inputs.available
Jul 24, 2026Artmix 16 MB 30-pin FPM SIMM
Unbranded		Single 16 MB, 60 ns, non-parity fast-page-mode SIMM for specifically listed 30-pin Macintosh systems.out-of-stock
Jul 24, 2026ATX2G3 Conversion Cable
Infinity Products		Adapts a modern 24-pin ATX power supply to selected Power Macintosh G3 and PCI Graphics G4 towers.available
Jul 24, 2026ATX2PM9600 PSU Conversion Kit
Infinity Products		Adapts a modern ATX power supply to a Power Macintosh 8600 or 9600 without cutting the computer's chassis.available
Jul 24, 2026AVGCART, SUBCART, and DUMBCART
MiscRetro		A family of SD multicarts for Atari 8-bit computers, ranging from cartridge loading to disk, tape, memory, clock, and audio expansion.available
Jul 24, 2026BAL-500 EPROM Programmer Kit
A2Heaven		Programs 16K, 32K, 64K, and 128K EPROMs from an Apple II expansion slot.out-of-stock
Jul 24, 2026BlinkenPDS
ZigZagJoe / Breadcrumbs		Visualizes Macintosh PDS signals with LEDs and provides a pass-through plus a right-angle test connector.available
Jul 24, 2026Blocko
Joe's Computer Museum		Recreates the Apple II Lego TC Logo interface card for controlling Lego Technic machines.available
Jul 24, 2026BurgerDisk / DominoDisk
Colin Leroy and Joe's Computer Museum		Provides a daisy-chainable SmartPort hard disk backed by one to four ProDOS images on microSD.available
Jul 24, 2026CatMac Mini Case Family
GutBomb Industries, Ron's Computer Videos, and Joe's Computer Museum		Turns a spare compact-Mac logic board into a small desktop computer with modern power, display, and storage hardware.available
Jul 24, 2026CC-Booster 33
Infinity Products		Adds a driverless 32 MHz 68030 accelerator to a Macintosh Color Classic or LC II processor-direct slot.out-of-stock
Jul 24, 2026CFFA1
R&D Automation		Adds CompactFlash storage to an Apple-1 or a compatible clone.available
Jul 24, 2026CFFA3000 Rev C-RM
R&D Automation and ReActiveMicro		Adds CompactFlash and USB mass storage plus floppy-image mounting to slotted Apple II and Apple III computers.available
Jul 24, 2026CH375 USB Storage Module
Z80 Kits		Adds bootable RomWBW storage and FAT32 file exchange on USB flash drives to supported RC2014 configurations.available
Jul 24, 2026Clipper Plus
Joe's Computer Museum		Adds an internal SCSI connection and termination power to a Macintosh Plus by clipping over its SCSI controller chip.available
Jul 24, 2026Colorizer 3
Joe's Computer Museum		Provides an RCA color-composite output from the Apple III family's 15-pin color-video connector.available
Jul 24, 2026Comm Slot II 10/100 Ethernet Card
Tech by Androda		Adds 10/100BASE-T Ethernet to Macintosh systems through the PCI-derived Comm Slot II interface.available
Jul 24, 2026Compact Flash Module v2
Z80 Kits		Adds solid-state CompactFlash storage for CP/M or RomWBW configurations.available
Jul 24, 2026Compact Macintosh Programmer's Switch Replacements
Infinity Products and MacEffects		Replaces missing or broken case-mounted programmer's switches on compact Macintosh computers.out-of-stock
Jul 24, 2026DB19 and IDC20 Floppy Cable Adapters
A2Heaven		Connects a 20-pin IDC Apple II floppy cable to a compatible DB-19 disk port.available
Jul 24, 2026DB9 Joystick 2 Plus
Infinity Products		Adds a rear-panel DB9 joystick connector to an Apple II with an internal 16-pin game I/O socket.out-of-stock
Jul 24, 2026dClock
A2Heaven		Adds battery-backed date and timekeeping to a compatible Apple IIc memory-expansion card.out-of-stock
Jul 24, 2026Dead Test Switcher for Apple II
Infinity Products and kerokero5150		Switches an Apple II F8 ROM socket between its normal Auto-Start Monitor and a licensed RAM diagnostic ROM.available
Jul 24, 2026Digital I/O Module
Z80 Kits		Adds eight pushbutton inputs and eight LED outputs.available
Jul 24, 2026Disk II+ Read/Write Status Board
Fabien Benattou		Replaces a Disk II drive's single red activity LED with separate green-read and red-write indication.available
Jul 24, 2026DS1302 Real Time Clock Module
Ed Brindley		Adds a battery-backed clock for timekeeping and file timestamps on supported RC2014 systems.available
Jul 24, 2026Dual Clock and Reset Module
Z80 Kits		Adds selectable CPU and peripheral clock rates plus supervised power-on reset.available
Jul 24, 2026Dual Paddle Analogue Module
Peacock Media		Adds two 8-bit, 0-to-5 V analogue inputs for paddles, sensors, and experiments.available
Jul 24, 2026eMate 300 Screen Flex Cable
Tech By Androda and Joe's Computer Museum		Replaces an eMate 300 display flex cable damaged by the computer's hinge mechanism.available
Jul 24, 2026eMate DRAM and Flash Upgrade
Tech By Androda and Joe's Computer Museum		Expands eMate 300 system RAM and internal flash storage while widening both buses to 32 bits.available
Jul 24, 2026EMPLANT Upgrade Parts
Utilities Unlimited		Replaces or upgrades the custom logic and serial clock parts on an existing EMPLANT Amiga expansion board.available
Jul 24, 2026ESP32 SoftCard
ESP32 SoftCard project		Adds an ESP32 coprocessor with switchable composite video, 8-bit audio, and microSD-backed software to slot-bearing Apple II systems.out-of-stock
Jul 24, 2026ESP8266 Wi-Fi Module
Z80 Kits		Connects an RC2014 serial port to a Wi-Fi network.available
Jul 24, 2026ESProFile
AlexTheCat / Breadcrumbs		Emulates Apple ProFile and Widget hard drives from SD-card images and provides low-level diagnostic and recovery tools.available
Jul 24, 2026Farallon EtherMac AAUI 10Base-T Transceiver
Farallon		Connects a Macintosh AAUI Ethernet port to twisted-pair 10BASE-T through an RJ-45 jack.available
Jul 24, 2026Farallon EtherMac LC PDS
Farallon		Vintage LC PDS card that adds 10Base-T Ethernet to supported LC, Performa, Quadra, and Color Classic systems.vintage
Jul 24, 2026FASTChip //e
A2Heaven		Accelerates an Apple IIe to as much as 16.6 MHz and adds fast auxiliary and Slinky memory.available
Jul 24, 2026fleXrom2K
JD Micro		Preprogrammed selectable replacement for several 2 KB system and character ROMs used in early Apple II computers.out-of-stock
Jul 24, 2026Franklin Ace 2x00 512 KB RAM Board
Joe's Computer Museum		Recreates the original 512 KB memory expansion for Franklin Ace 2x00 computers.available
Jul 24, 2026GR8RAM
Garrett's Workshop		Provides selectable Apple Slinky or RAMFactor-compatible memory using modern low-power SDRAM.diy
Jul 24, 2026Grappler Minus
Infinity Products and Wing Yeung		Adds the SoftSP ROM path needed to use a Disk II controller and SPIISD V2 in SmartPort mode.available
Jul 24, 2026GS ATX
Joe's Computer Museum		Adapts a modern PicoPSU and external power brick to the Apple IIgs.out-of-stock
Jul 24, 2026GS2HD Component Video Adapter
GGLABS		Converts Apple IIgs 15 kHz analog RGB to YPbPr component video for compatible televisions.out-of-stock
Jul 24, 2026GW419X 30-pin RAM SIMM Family
Garrett's Workshop		Open four-layer 30-pin FPM memory family with 4 MB, parity, 16 MB, and early-Macintosh PAL SIMM variants.diy
Jul 24, 2026GW4301A 2 MB geoRAM
Garrett's Workshop		Open low-power 2 MB geoRAM-compatible expansion cartridge for the Commodore 64.diy
Jul 24, 2026GW4402B 8 MB ROM SIMM
Garrett's Workshop		Open 64-pin ROM SIMM with selectable 32-bit-clean System 6 and System 7.1 ROM disks for six 68030 Macintosh models.diy
Jul 24, 2026GW4405A 512 KB VRAM SIMM
Garrett's Workshop		Open 512 KB 68-pin Macintosh VRAM SIMM built with new 80 ns or faster memory.diy
Jul 24, 2026GW4406A Macintosh Classic RAM Card
Garrett's Workshop		Open low-profile card that adds 3 MB to a Macintosh Classic using two modern DRAM chips.diy
Jul 24, 2026GZ/80 Turbo CP/M SoftCard
GGLABS		Adds a Microsoft SoftCard-compatible Z80 processor for running CP/M, with an optional turbo mode.out-of-stock
Jul 24, 2026GZ/80S 20MHz CP/M Card
GGLABS		Runs PCPI Applicard-compatible CP/M software on a dedicated 20 MHz Z80 with 512K of onboard RAM.out-of-stock
Jul 24, 2026HDI-45 Video Adapters
Michael Wottle / Joe's Computer Museum		Convert the unusual HDI-45 video port on first-generation Power Macintosh systems to Macintosh DA-15 or VGA-style HD-15 output.available
Jul 24, 2026IBM 15-pin to Apple 9-pin Joystick Adapter
Manila Gear		Adapts a PC-style DB-15 analog joystick to the Apple II 9-pin game-port wiring.available
Jul 24, 2026ICS64S
CBMSTUFF.COM		Rebuilds a Commodore 64 around a modern replacement motherboard with improved power, protection, video, diagnostics, and ROM switching.discontinued
Jul 24, 2026Idle Hands Micro Joystick
Infinity Products		Provides a compact analog joystick for Apple II game ports, with kit and assembled configurations.out-of-stock
Jul 24, 2026Idle Hands Micro Paddle
Infinity Products		Compact Apple II paddle controller offered as an assembled unit or a beginner-friendly through-hole kit.available
Jul 24, 2026IIe Cooler
Manila Gear and ReActiveMicro		Adds quiet forced-air cooling and switched or always-on IEC power outlets to an Apple IIe.available
Jul 24, 2026ImageScribbler LocalSquawk Option
Ian Scott		Adds LocalTalk networking to an Apple ImageWriter II or ImageWriter LQ printer.available
Jul 24, 2026ISASTM
Manawyrm		Implements an experimental STM32-based USB host for operating ISA cards on an external backplane.diy
Jul 24, 2026J12 Breakout Family for Compact Macs
Joe's Computer Museum		Breaks out compact Macintosh power rails and video signals for custom logic-board projects.available
Jul 24, 2026JCM Apple III Replacement ROM Family
Joe's Computer Museum		Replaces Apple III boot, synchronization, video, and bipolar state-machine ROMs with modern EEPROM carrier boards.available
Jul 24, 2026JCM Universal Apple RGB Adapter
Joe's Computer Museum		Converts Apple III or compatible Apple IIe TTL RGB to CGA-style and Apple IIgs-monitor outputs.available
Jul 24, 2026JCM Universal Keyboard Encoder
Joe's Computer Museum		Replaces the General Instrument AY-5-3600-PRO keyboard encoder in several Apple computers.available
Jul 24, 2026LapisColor MV16 Ethernet and Video Card
Focus Enhancements		Vintage internal PowerBook 5300 card that adds Ethernet and external color video without occupying a PC Card slot.vintage
Jul 24, 2026Laser 128 Expansion Slot
A2Heaven		Adds external Apple II-compatible slots 5 and 7 to a Laser 128.out-of-stock
Jul 24, 2026LC ATX and mAcTX-LC
Joe's Computer Museum and Rabbit Hole Computing		Adapts a modern PicoPSU and external power brick to several Macintosh LC-family computers.available
Jul 24, 2026LCD Driver Module
Z80 Kits		Connects HD44780 character displays as a readable and writable RC2014 peripheral.available
Jul 24, 2026Liron Reborn
A2Heaven		Combines SmartPort block-device support and selectable Disk II floppy-controller operation.out-of-stock
Jul 24, 2026LisaFPGA
Alex Anderson-McLeod		Reimplements the Lisa 1 and Lisa 2/5 as an open FPGA system with HDMI, USB input, and SD-backed ProFile storage.diy
Jul 24, 2026LiteSound
Bob Darlington		Exposes the Apple IIgs Ensoniq chip's native stereo channels through a rear-panel audio output.available
Jul 24, 2026Mac Classic II 68882 FPU Card Family
Infinity Products and Jurassic Computing		Adds an optional Motorola 68882 floating-point coprocessor to the Macintosh Classic II.available
Jul 24, 2026Mac ROM-inator I
Big Mess o' Wires, Infinity Products, and FrodoJedi		Current and buildable replacement ROMs for early compact Macs with a customizable bootable ROM disk and HD20 support.available
Jul 24, 2026MacBong!
Infinity Products and MFA2 Workshop		Adapts modern USB keyboards and mice to early Macintosh keyboard and mouse ports or to ADB.available
Jul 24, 2026MacEffects bitMOUSE
MacEffects		Lets an Apple IIe use a native DB-9 serial PC mouse with adjustable tracking and accelerator compensation.out-of-stock
Jul 24, 2026MacEffects SE and SE/30 LED Fan Kit
MacEffects		Replacement compact-Mac fan rated at 24 CFM, approximately twice the airflow MacEffects attributes to the stock fan.out-of-stock
Jul 24, 2026MacEffects Thunder PDS Accelerator
MacEffects		Runs the Macintosh LC II or Color Classic with a 32 MHz 68030 processor and 68882 floating-point unit.out-of-stock
Jul 24, 2026Macintosh Classic Reloaded Logic Board
Kai Robinson and MacEffects		Replacement bare PCB for rebuilding a Macintosh Classic whose original logic board is damaged.out-of-stock
Jul 24, 2026Macintosh Classic Reloaded RAM Expansion Board
Kai Robinson and Branchus		Open replacement RAM expansion board for an original or Reloaded Macintosh Classic logic board.diy
Jul 24, 2026Macintosh IIfx Logicboard Recreation
Bolle		Recreates the Macintosh IIfx logic board with new board files, schematics, a parts list, and rewritten PAL logic.diy
Jul 24, 2026Macintosh J12 Cable
Joe's Computer Museum		New replacement for the analog-board to logic-board signal cable in four compact Macintosh models.available
Jul 24, 2026Macintosh LC 475 Logicboard Recreation
Bolle		Recreates the Macintosh LC 475 and Performa 475 logic board as a buildable replacement PCB.diy
Jul 24, 2026Macintosh Portable 8 MB Memory Upgrade
Techknight and MacEffects		Adds bank-activity LEDs and up to 8 MB of recognized memory through the Macintosh Portable memory slot.out-of-stock
Jul 24, 2026Macintosh Portable Battery Eliminator
Tech By Androda and Joe's Computer Museum		Replaces the Macintosh Portable's lead-acid battery so the computer can run from a sufficiently capable external supply.available
Jul 24, 2026Macintosh Portable Hybrid Module Recreation
Tech by Androda		Replaces the failure-prone power-control hybrid module in the non-backlit M5120 Macintosh Portable.available
Jul 24, 2026Macintosh Portable Internal SCSI Conversion Kit
Artmix		Converts the Macintosh Portable's internal 34-pin SCSI connection for a 2.5-inch notebook SCSI device.available
Jul 24, 2026Macintosh Portable Screen Flex Cables
Tech By Androda and Joe's Computer Museum		Replaces the display flex cable in a backlit M5126 or an M5120 fitted with Apple's backlight upgrade.available
Jul 24, 2026Macintosh Quadra 950 Logicboard Recreation
Bolle		Recreates the Macintosh Quadra 950 logic board with new fabrication and assembly data.diy
Jul 24, 2026Macintosh SE Reloaded Logic Board
Kai Robinson / MacEffects		Provides a newly manufactured bare replacement PCB for rebuilding a damaged Macintosh SE logic board.out-of-stock
Jul 24, 2026MacPicoVid and SE-COMBO Family
Joe's Computer Museum and guruthree		Converts raw compact-Mac video to VGA, with optional power integration for bare logic-board projects.available
Jul 24, 2026MacSD
YMK Devices		Multifunction 50-pin SCSI-2 device that emulates hard disks and CD-ROM drives from SD or MMC media.available
Jul 24, 2026MACSIMM and EconoSimm Programmable ROM SIMMs
GGLABS and fran-cap		Replace a Macintosh ROM SIMM with reprogrammable flash for custom ROMs and, with 2 MB of flash, a bootable ROM disk.diy
Jul 24, 2026MacVGA-Lite
Infinity Products		Adapts Macintosh two-row DB-15 video to VGA with one switch for universal 640 by 480 or multiscan display modes.available
Jul 24, 2026MEGA Audio
A2Heaven		Combines two Mockingboards, one ALF music card, and four S.A.M. DAC channels on one Apple II audio card.available
Jul 24, 2026MegaFlash for Apple IIc and IIc Plus
Elmars Ositis and Thomas Fok		Adds flash-backed ProDOS volumes, a RAM disk, recovery ROM, clock, network transfer, and Applesoft enhancements inside an Apple IIc or IIc Plus.available
Jul 24, 2026MM5740AAE Replacement Keyboard Encoder
Joe's Computer Museum		Replaces the National Semiconductor MM5740AAE/N encoder used by Datanetics-style Apple II keyboards.available
Jul 24, 2026MockingBoard-T
A2Heaven		Recreates Mockingboard-A sound hardware and adds a vacuum-tube audio preamplifier.out-of-stock
Jul 24, 2026MyTek SIO2MIDI Family
MyTek / The Brewing Academy		Connects MIDI instruments or an optional DreamBlaster wavetable module to an Atari 8-bit computer through SIO.diy
Jul 24, 2026NeoPixel Display Module Family
Peacock Media		Drives an optional 64-pixel RGB matrix or an external addressable-LED chain.available
Jul 24, 2026Newton MessagePad 2000/2100 LCD Panel
Apple		Genuine new-old-stock LCD replacement for Newton MessagePad 2000 and 2100 displays.vintage
Jul 24, 2026No-Slot Clock Family
ReActiveMicro and Manila Gear		Adds battery-backed date and time without consuming an Apple II expansion slot.available
Jul 24, 2026NuCF CompactFlash Adapter
ZigZagJoe		Adds bootable CompactFlash storage through the PDS, bypassing the original SCSI implementation.out-of-stock
Jul 24, 2026OneROM Fire
Piers Finlayson		Replaces many 24-, 28-, 32-, and 40-pin EPROMs and mask ROMs with a configurable RP2350 board programmed over USB.diy
Jul 24, 2026Open2327 ROM Adapter Family
SukkoPera / The Brewing Academy		Replaces a 24-pin 2364 ROM with a programmable 27xxx-family EPROM or EEPROM and optionally switches among several ROM images.available
Jul 24, 2026Pageable ROM Module
Z80 Kits		Adds flexible ROM sizing and the ability to page ROM out for a full 64K of RAM.available
Jul 24, 2026PC Gameport Party
1Bit Fever Dreams		Breaks out a vintage PC gameport for two joysticks plus simultaneous MIDI input and output.available
Jul 24, 2026Phase 3
Joe's Computer Museum		Corrects the color-phase error in the Apple III family's NTSC composite-video signal.available
Jul 24, 2026Pi Pico MicroSD Card Module
Extreme Kits		Replaces the RC2014 CompactFlash storage module with microSD for CP/M 2.2.available
Jul 24, 2026PicoGUS
Ian Scott		An 8-bit ISA card with switchable classic sound-card modes plus MIDI, USB game-controller, and CD-ROM emulation.available
Jul 24, 2026PicoIDE
Ian Scott		Emulates IDE hard disks and ATAPI CD-ROM drives from image files on a microSD card, with optional front-panel and Wi-Fi controls.preorder
Jul 24, 2026PiggyBack8M
A2Heaven		Adds 8 MB of low-power SRAM and battery-backed storage to a RamWorks III card.out-of-stock
Jul 24, 2026PowerBook 140-Series Passive-Matrix Display Flex Cable
Tech By Androda / Joe's Computer Museum		Replaces the display flex cable in passive-matrix PowerBook 140, 145, 160, and 165 notebooks.available
Jul 24, 2026ProDev DDT8 and DDT16
ProDev, Inc.; ReActiveMicro and A2Heaven reproductions		Provides hardware-assisted assembly-language tracing and debugging for the Apple IIe and Apple IIgs.available
Jul 24, 2026Quadra Stepper SCSI Rider
Infinity Products		Extends a Macintosh rear DB-25 SCSI port so a DB-25 BlueSCSI can connect with usable clearance.available
Jul 24, 2026Quapple Quadlink Clone
Eric Schlaepfer		Adds an Apple II-compatible environment to an IBM PC through an ISA expansion card.diy
Jul 24, 2026Quazar Graphic OLED Display
Quazar		Adds a high-contrast 128x32-pixel green OLED display.out-of-stock
Jul 24, 2026Quazar SID Interface
Quazar		Connects an original or modern replacement SID module to an RC2014.available
Jul 24, 2026QuokkADB and HIDHopper ADB
Rabbit Hole Computing and Tech by Androda		Connects modern USB HID keyboards and mice to Macintosh computers through Apple Desktop Bus.available
Jul 24, 2026QuokkaNeXT HID
Rabbit Hole Computing		Connects modern USB keyboards and mice to the five-pin non-ADB NeXT input interface.available
Jul 24, 2026Radeon 7000 PCI Mac ROM Conversion
ATI and Infinity Products		Converts selected PC Radeon 7000 PCI graphics cards for classic Mac use with a Mac ROM v226 image.available
Jul 24, 2026RAM Hijacker
Infinity Products		Converts an Apple IIe 80-column card into a 64K auxiliary-memory card.available
Jul 24, 2026RAM128
Garrett's Workshop		Adds 128 KB of low-power Saturn-compatible bank-switched RAM to slot-based Apple II systems.diy
Jul 24, 2026RAM2E II
Garrett's Workshop		Adds low-profile, adjustable RAMWorks-compatible auxiliary memory to an Apple IIe.diy
Jul 24, 2026RAM2GS II
Garrett's Workshop		Adds selectable 4 MB or 8 MB of low-profile SDRAM fast memory to an Apple IIgs.diy
Jul 24, 2026RamExpress II Memory and Clock
A2Heaven		Adds 1 MB of battery-backed RAM and a real-time clock to supported Apple IIc and IIc Plus logic boards.out-of-stock
Jul 24, 2026RamFactor1M and RamFactor8M
A2Heaven		Modernizes the Applied Engineering RAMFactor design with 1 MB or 8 MB of low-power Slinky RAM and battery-backed storage.available
Jul 24, 2026RAMGS/4 and RAMGS/8 Memory Expansion
GGLABS		Adds either 4 MB or 8 MB of low-power fast RAM to an Apple IIgs.out-of-stock
Jul 24, 2026RamWorks III Clone 64K Kit
A2Heaven		Recreates the Applied Engineering RamWorks III memory and 80-column card for the Apple IIe.out-of-stock
Jul 24, 2026RamWorks III VGA Extender
A2Heaven		Adds VGA output to an Apple IIe through a compatible RamWorks III memory card.out-of-stock
Jul 24, 2026RAMWorks IIII
ReActiveMicro		Adds 4 MB of auxiliary-slot RAM to an Apple IIe in assembled or through-hole kit form.available
Jul 24, 2026RamWorks8M
A2Heaven		Adds 8 MB of auxiliary-slot SRAM and battery-backed storage to an Apple IIe.out-of-stock
Jul 24, 2026RAMX128K
JDMicro and ReActiveMicro		Adds 128 KB of bank-switched RAM to an Apple II or II Plus through the slot 0 language-card connector.available
Jul 24, 2026RC2014 IDE Hard Drive Module
Z80 Kits		Connects 2.5-inch or 3.5-inch IDE storage to a suitably configured RC2014 through an Intel 8255 interface.available
Jul 24, 2026ReActiveMicro 9316 ROM Adapter Tools
ReActiveMicro		Reads early Apple II 9316A ROMs in a modern programmer or replaces compatible 9316B and 2316B ROMs with a programmed EEPROM adapter.available
Jul 24, 2026ReActiveMicro Drive/Turbo
ReActiveMicro		Adds IDE mass storage to slotted Apple II computers with CompactFlash and external-drive options.available
Jul 24, 2026ReActiveMicro Mini AV2HDMI Video Adapter
ReActiveMicro		Converts NTSC composite video and analog audio from an Apple II or Apple III to an HDMI display.available
Jul 24, 2026ReActiveMicro Phasor
ReActiveMicro		Adds twelve-voice stereo synthesis with a Mockingboard-compatible mode to slotted Apple II computers.available
Jul 24, 2026ReActiveMicro TransWarp GS
ReActiveMicro, based on Applied Engineering TransWarp GS		Recreates and modernizes the TransWarp GS accelerator for ROM 01 and ROM 03 Apple IIgs systems.preorder
Jul 24, 2026ReActiveMicro Universal PSU Family
ReActiveMicro		Replaces aging Apple II, Apple IIgs, or Apple III power supplies with universal-input modern hardware.available
Jul 24, 2026reDIP-SID
reDIP-SID project		Open FPGA hardware and gateware platform in a DIP-28 package for emulating 6581 and 8580 SID chips.diy
Jul 24, 2026ROMX, ROMXe, ROMXc, and ROMXc+
The ROM Exchange		Replaces Apple II system ROMs with in-system programmable banks selected from an on-screen menu.available
Jul 24, 2026RP2040 and Pi Pico VGA Terminal Family
Z80 Kits		Adds an 80-column VGA serial terminal with USB keyboard input, a buzzer, and microSD support to an RC2014.available
Jul 24, 2026SC145 Compact Flash Module
Small Computer Central		Adds CompactFlash storage to an RC2014 through a simple 8-bit IDE interface.diy
Jul 24, 2026SC151 Paged ROM Module
Small Computer Central		Adds four switchable 32K banks of Flash ROM to an RC2014 system.diy
Jul 24, 2026SC152 Memory Module
Small Computer Central		Combines 128K of Flash ROM and 128K of paged RAM for RC2014 systems, including CP/M configurations.diy
Jul 24, 2026SC703 and SC712 Power and Reset Modules
Small Computer Central		Add supervised 5 V power, manual reset, and power-on reset to an RCBus system.diy
Jul 24, 2026SC704 I2C Bus Master
Small Computer Central		Adds a software-driven I2C master interface to RC2014 and RCBus systems.diy
Jul 24, 2026SC705 Serial ACIA Module
Small Computer Central		Adds a clock-stable 68B50 serial port with TTL-level flow control.diy
Jul 24, 2026SC706 Z80 CPU Module
Small Computer Central		Provides a modular Z80 processor with flexible clock and reset options.diy
Jul 24, 2026SC707 Z80 Memory Module
Small Computer Central		Adds 128K of Flash ROM and 128K of paged RAM for a CP/M-capable Z80 system.diy
Jul 24, 2026SC708 Z80 SBC Module
Small Computer Central		Combines a Z80, paged RAM and Flash, clock, reset, and serial terminal on one RCBus module.diy
Jul 24, 2026SC714 Z80 Memory Module
Small Computer Central		Adds 512K of Flash ROM and 512K of banked RAM for RomWBW and CP/M.diy
Jul 24, 2026SC715 and SC729 Compact Flash Modules
Small Computer Central		Adds CompactFlash storage to RC2014 and RCBus systems at I/O ports 0x10 through 0x17.diy
Jul 24, 2026SC716 Z80 SIO/2 Serial Module
Small Computer Central		Adds two clock-stable serial ports using a Z80 SIO/2.diy
Jul 24, 2026SC717 Z80 PIO Module
Small Computer Central		Adds 16 programmable parallel I/O lines and four handshake lines through a Z80 PIO.diy
Jul 24, 2026SC718 Z80 CTC Module
Small Computer Central		Adds four programmable counter and timer channels with frequency and interrupt generation.diy
Jul 24, 2026SC719 Digital I/O Module
Small Computer Central		Adds eight 5 V TTL inputs and eight 5 V TTL outputs with state LEDs.diy
Jul 24, 2026SC721 Linear Memory Module
Small Computer Central		Adds 512K of RAM and selectable 512K Flash ROM to a 20-bit-address RCBus system.diy
Jul 24, 2026SC722 Z180 CPU Module
Small Computer Central		Adds an 18.432 MHz Z180 processor, dual serial ports, and a microSD interface.diy
Jul 24, 2026SC725 Serial and Timer Module
Small Computer Central		Combines two Z80 SIO/2 serial ports with four programmable Z80 CTC channels.diy
Jul 24, 2026SC726 Clock Module
Small Computer Central		Generates three independently selected clock outputs for RCBus processor and peripheral timing.diy
Jul 24, 2026SC727 DS1302 Real-Time Clock Module
Small Computer Central		Adds a battery-backed DS1302 real-time clock and several spare I/O bits.diy
Jul 24, 2026SC730 Z80 CPU plus MMU Module
Small Computer Central		Combines a Z80 processor with a 20-bit MMU for SC721's 1 MB linear memory.diy
Jul 24, 2026SC731 Dual PWM Module
Small Computer Central		Adds two independently writable pulse-width modulation outputs.diy
Jul 24, 2026SC732 Dual Servo Module
Small Computer Central		Controls two hobby servos through two tightly decoded output ports.diy
Jul 24, 2026SC734 MicroSD Module
Small Computer Central		Adds simple bit-banged microSD storage with RomWBW support.diy
Jul 24, 2026SC737 50 Hz Interrupt Module
Small Computer Central		Adds a software-enabled 50 Hz system tick interrupt.diy
Jul 24, 2026SC738 Reset Module
Small Computer Central		Adds supervised power-on reset, a debounced reset button, and software-triggered reset.diy
Jul 24, 2026SCSI Adapter With Blinkenlights
Tech By Androda		Adapts several common vintage SCSI connectors while eighteen LEDs expose signal activity for testing and troubleshooting.available
Jul 24, 2026SCSI Rider
Infinity Products		Mounts a BlueSCSI or another 50-pin SCSI device directly above a Macintosh internal SCSI connector.available
Jul 24, 2026SCSI Rider 2
Infinity Products		Connects a 50-pin SCSI device such as BlueSCSI V2 directly to an external Macintosh DB-25 SCSI port.diy
Jul 24, 2026SDFloppy II
A2Heaven		Emulates a Disk II floppy drive with disk images stored on an SD card.out-of-stock
Jul 24, 2026SDisk2 Floppy Emulator
Koichi Nishida and later contributors		SD-card floppy emulator for Apple II-series computers using an Apple II Disk Interface Card.out-of-stock
Jul 24, 2026SDrive-MAX
KBr		Emulates Atari SIO disk and cassette drives from microSD storage with an Arduino and touchscreen.diy
Jul 24, 2026SE/30 Colour LCD Retrofit Kit
ZigZagJoe / Breadcrumbs		Replaces the Macintosh SE/30 CRT and analog board with an 8.4-inch color LCD driven by a 30Video HC PDS card.out-of-stock
Jul 24, 2026Senior PROM IIe
A2Heaven		Recreates the Senior PROM utility and protection-bypass board for compatible Apple IIe systems.out-of-stock
Jul 24, 2026SID-Ulator Sound Module
Z80 Kits		Adds an onboard emulation of the MOS 6581 or 8580 SID sound chip.available
Jul 24, 2026SIDKick Pico
SIDKick project		DIY RP2040- or RP235x-based replacement for one or two 6581 or 8580 SID chips, with optional FM emulation and paddle or mouse input support.diy
Jul 24, 2026SiI3112 PCI SATA Cards
Rabbit Hole Computing		Adds SATA storage to a PC-compatible PCI system with a bootable option ROM.out-of-stock
Jul 24, 2026SIO/2 Dual Serial Module
Z80 Kits		Adds two Zilog SIO/2 serial ports for terminals, printers, and other devices.available
Jul 24, 2026Slot-Loading iMac G3 Inner Bezel
MacEffects		Injection-molded structural replacement for the brittle inner bezel in slot-loading CRT iMac G3 systems.out-of-stock
Jul 24, 2026SMC 256 KB VRAM SIMM
Infinity Products		Two-chip 256 KB 68-pin VRAM SIMM for 68K Macintosh models that cannot use, or do not need, a 512 KB module.available
Jul 24, 2026SMC 27CXXX ROM Kit for MSX
Infinity Products		MSX cartridge kit for 8 KB through 64 KB DIP28 EPROMs, including a switchable dual-32 KB mode.available
Jul 24, 2026SMC 4 MB 30-pin SIMM Kit
Infinity Products		DIY 4 MB 30-pin Macintosh memory module made by transplanting DRAM from a compatible 16 MB 72-pin SIMM.available
Jul 24, 2026SMC 512 KB VRAM SIMM
Infinity Products		512 KB 68-pin Macintosh VRAM module sold in a premium 60 ns design and a limited early four-chip design.available
Jul 24, 2026SMC 64 KB RAM Card for MSX
Infinity Products		Expands a low-memory first-generation MSX computer to the MSX1 maximum of 64 KB RAM.available
Jul 24, 2026SMC 64K IMP-RAM Card
Infinity Products		Expands a 64K Apple IIe to 128K through the auxiliary slot and provides 80-column memory.available
Jul 24, 2026SMC Beleth's Drum
Infinity Products		Adds relay-generated hard-drive activity sounds to otherwise silent BlueSCSI, CompactFlash, and solid-state storage.available
Jul 24, 2026SMC DONT4GET
Infinity Products		Adapts a CR2032 coin cell to a vintage Macintosh 1/2-AA battery socket.available
Jul 24, 2026SMC Fat Mac Switcher
Infinity Products		Switches an upgraded early Macintosh between 128K and 512K memory configurations.available
Jul 24, 2026SMC Flippy-Floppy
Infinity Products		Switches a Mystic-upgraded Color Classic between its internal floppy drive and an external Floppy Emu.available
Jul 24, 2026SMC PDS ROM Card
Infinity Products		Moves an SE/30 ROM onto a PDS card, bypassing the aging ROM SIMM socket and adding a bootable 2 MB ROM disk.available
Jul 24, 2026SMC ROM SIMM Card
Infinity Products		Provides a programmable 2 MB Macintosh ROM SIMM using four socketed PLCC32 flash chips.available
Jul 24, 2026SMC Satanic128
Infinity Products		Recreates the Saturn 128K bank-switched memory card for original Apple II systems.available
Jul 24, 2026SMC SE Analog Board Resurrection
Infinity Products		Provides new bare analog and neck-board PCBs for rebuilding a Macintosh SE display and power assembly.available
Jul 24, 2026SoftCard III Reproduction
Joe's Computer Museum		Adds a Z80 processor and Microsoft SoftCard III compatibility for running CP/M on the Apple III family.available
Jul 24, 2026SoftSP
Mfa2 Workshop		Adds a pseudo-SmartPort boot path for hard-disk images and compatible storage devices on Apple II models without built-in SmartPort support.out-of-stock
Jul 24, 2026Sophia 3
The Brewing Academy		Replaces an Atari 8-bit computer's GTIA with a modern video board offering DVI output and selectable color palettes.available
Jul 24, 2026SOSHDBoot
Robert Justice and Joe's Computer Museum		Replaces the Apple III boot ROM so SOS can boot directly from compatible ProDOS block storage.available
Jul 24, 2026Spicy O'Clock
Infinity Products		Provides finely adjustable clock generation for selected 68040 Macintosh logic boards using an XC88916-family clock driver.available
Jul 24, 2026SPIISD V2
Infinity Products and kerokero5150		Provides SmartPort-compatible SD-card hard-drive emulation with an OLED display and button controls.available
Jul 24, 2026Stealth Apple IIe to IIgs Conversion Kit
MacEffects		Mounts donor Apple IIgs electronics inside a compatible Apple IIe case.out-of-stock
Jul 24, 2026Stratos Hyper Power Supply for SE/30
Stratos Technology		Fanless reinforced Macintosh SE/30 power supply intended for accelerators, larger hard drives, and high-capacity memory.out-of-stock
Jul 24, 2026Stratos Power Mac G4 Cube High-Power VRM
Stratos Technology		Replacement high-power voltage-regulator module for upgraded Power Mac G4 Cube systems.available
Jul 24, 2026Stratos SD-to-SCSI Adapter Family
Stratos Technology		SD-card storage adapters for notebook SCSI, internal 50-pin SCSI, and external DB-25 SCSI connections.available
Jul 24, 2026Stratos Technology TwinSpark
Stratos Technology		Macintosh SE/30 PDS adapter for combining a supported CPU accelerator with a supported video or Ethernet card.available
Jul 24, 2026Super Tracker II
CBMSTUFF.COM		Adds a live track, density, write-protect, motor, and sync display to supported Commodore floppy drives.out-of-stock
Jul 24, 2026Super Wh-IWM Swapper
Infinity Products		Adapts a later PLCC44 SWIM floppy controller to the DIP28 socket in an early Macintosh SE.available
Jul 24, 2026Supercard+ Drive Copier
Utilities Unlimited		Installs inside supported Commodore floppy drives to duplicate protected disks and add disk utilities.out-of-stock
Jul 24, 2026SUPERPROTO
ReActiveMicro		Provides a reusable prototyping card with an in-system programmable ROM for Apple II and Apple III hardware projects.available
Jul 24, 2026SX-64 Ultra Reset
CBMSTUFF.COM		Uses the SX-64's existing drive-reset button to reset the computer, change drive numbers, and switch ROM sets.available
Jul 24, 2026Synchr030/S
YMK Devices		PDS memory accelerator that replaces Macintosh SE/30 SIMMs with 256 MB of SDRAM and provides an unbuffered PDS pass-through.available
Jul 24, 2026Tangy Pack HDMI and VGA Adapter
Rob Kim		Adds scan-doubled HDMI and VGA output to supported compact Apple II systems through their video expansion port.out-of-stock
Jul 24, 2026TashTalk USB
Feral Firmware and Tashtari		Connects a modern Mac or Linux computer directly to vintage LocalTalk computers and peripherals over USB.available
Jul 24, 2026TBA PS/2 Mouse Adapter Family
The Brewing Academy		Connects a PS/2-compatible mouse to an Atari 8-bit or Atari ST-family computer.out-of-stock
Jul 24, 2026TBA Replacement Power for Atari XL/XE
The Brewing Academy		Replaces aging Atari XL and XE power bricks with a regulated supply or a USB-powered DIN-7 cable.out-of-stock
Jul 24, 2026TBA RT8 Cartridge
The Brewing Academy		Adds a battery-backed real-time clock and calendar to Atari 8-bit computers through the cartridge port.out-of-stock
Jul 24, 2026TBA SIO2PC
The Brewing Academy		Connects an Atari 8-bit computer to a modern Mac or Windows computer for disk, cassette, modem, printer, and file-transfer emulation.out-of-stock
Jul 24, 2026TimeDisk
Garrett's Workshop		Open 1 MB battery-backed RAMFactor-compatible memory card with a NoSlotClock-compatible clock and ProDOS restore image.diy
Jul 24, 2026TimeMaster H.O. Clone
A2Heaven		Recreates the Applied Engineering real-time clock and digital I/O card for Apple II computers.available
Jul 24, 2026TinyCOMP
Rudy Panigas / Joe's Computer Museum		Adds NTSC composite video to tested RF-only vintage computers with a small internal solder-in board.available
Jul 24, 2026Titan III plus IIe Card Set Reproduction
Joe's Computer Museum		Adds an Apple IIe-compatible mode with 128K RAM and Double Hi-Res graphics to the Apple III family.available
Jul 24, 2026TK-II PS/2 Keyboard Family
MyTek		Lets Atari 8-bit computers use an external PS/2 keyboard through a POKEY-based internal adapter.diy
Jul 24, 2026Tokamac LC / Sonnet Presto 040 Recreation
Bolle		Recreates a 25 MHz 68040 accelerator for the Macintosh LC, LC II, and Color Classic.diy
Jul 24, 2026Trak Star II
A2Heaven		Displays the current head position of a compatible 5.25-inch Apple II floppy drive.out-of-stock
Jul 24, 2026Tune-O-Gear
Infinity Products		Replacement second gear that restores automatic eject operation in compatible Macintosh floppy mechanisms.available
Jul 24, 2026Tynemouth 68B50 Clocked Serial Port
Tynemouth Software		Adds a 5 V TTL serial port and an independently usable 7.3728 MHz clock.available
Jul 24, 2026Tynemouth Joystick Module
Tynemouth Software		Adds one Atari and Commodore-style nine-pin joystick port.available
Jul 24, 2026Ultimate 1MB Upgrade
Sebastian Bartkowicz / Lotharek		Adds configurable expanded memory, flashable operating-system slots, SpartaDOS X, and a battery-backed clock to Atari XL and XE computers.out-of-stock
Jul 24, 2026Ultimate Atari Video (UAV) Rev. D
Bryan Edewaard / The Brewing Academy		Adds clean composite and S-Video output circuitry to supported Atari 8-bit computers.available
Jul 24, 2026Ultimate Gated Video (UGV-II)
MyTek		Improves Atari 8-bit analog video and corrects overscan for modern displays.diy
Jul 24, 2026Universal Front Panel I/O Kit
Z80 Kits		Adds eight remote input switches and eight output LEDs for RomWBW or an Orton 3C.available
Jul 24, 2026Universal Plus/SE/Classic TTL Video Adapter
Joe's Computer Museum		Breaks out compact Macintosh internal TTL video for an RGBtoHDMI or another compatible digital scaler.available
Jul 24, 2026Utilities Unlimited Super Cartridge
Utilities Unlimited		Provides a menu-driven utility cartridge or a bare board for building a custom multi-EPROM C64 cartridge.available
Jul 24, 2026Vampire Power Adapter
Manila Gear		Breaks out Apple IIgs power-supply voltages for internal fans, sound cards, drives, and other projects without cutting wires.out-of-stock
Jul 24, 2026VGA Adapter for Macintosh Portable
Tech By Androda and Joe's Computer Museum		Displays Macintosh Portable video on a VGA monitor at 640 by 480 with centered 640 by 400 content.available
Jul 24, 2026VidHD
BitPair LLC		Adds HDMI video output and Apple IIgs-derived display modes to Apple II slot computers.unknown
Jul 24, 2026Why Cable? Apple IIe Card Y-Cable Replacement
Joe's Computer Museum		Restores the external floppy-drive and joystick connections of a Macintosh Apple IIe Card.available
Jul 24, 2026Why Em-Ulator Sound Module
Z80 Kits		Emulates a YM2149, AY-3-8910, or AY-3-8912 without requiring an original sound chip.available
Jul 24, 2026WiModem
CBMSTUFF.COM		Adds Wi-Fi BBS and Hayes-modem access through the user port of supported Commodore computers.out-of-stock
Jul 24, 2026WiModem232 Pro
CBMSTUFF.COM		Connects supported vintage computers to Wi-Fi BBSes through an RS-232 serial port.available
Jul 24, 2026WOOTSwitch
Joe's Computer Museum and saybur		Shares one basic ADB keyboard and mouse among as many as four retro-computer hosts.available
Jul 24, 2026Xdrive Family
JD Micro and MacEffects		Mounts as many as eight block-device images from USB storage or microSD through slot-card and Apple IIc CPU-socket versions.out-of-stock
Jul 24, 2026XEP80-II
MyTek		Adds an 80-column text display to Atari 8-bit computers, with composite output and an optional HDMI conversion path.out-of-stock
Jul 24, 2026YM2149 Sound Card
Ed Brindley		Adds three-channel YM2149 or AY-3-8910 sound and stereo line output to an RC2014.available
Jul 24, 2026Z80 CPU Module
Z80 Kits		Provides a replaceable Z80 processor module with optional advanced bus signals.available
Jul 24, 2026ZuluIDE V2
Rabbit Hole Computing		Emulates IDE or ATAPI hard disks, CD-ROMs, Zip 100 drives, and removable media from image files on an SD card.available
Jul 24, 2026ZuluSCSI Family and TinySCSI
Rabbit Hole Computing and ZigZagJoe		Open-firmware SCSI emulators in DB-25, internal 50-pin, laptop, and Wide SCSI form factors.available
Jul 23, 2026Gotek Floppy Emulator with FlashFloppy
Gotek and Keir Fraser		Replaces supported 34-pin floppy drives with disk images stored on a USB flash drive.available
Jul 15, 2026AdLib Sound Card Reproduction
Eric Schlaepfer		Recreates the circa-1990 AdLib OPL2 FM-synthesis sound card as a buildable open hardware project.diy
Jul 15, 2026Amiga 1000 Kickstart Eliminator
Eric Schlaepfer		Modifies an Amiga 1000 to boot Kickstart from four EPROMs while retaining access to its 256 KB daughterboard RAM.diy
Jul 15, 2026Amiga SCSI Sidecar
Eric Schlaepfer		Recreates the Comspec SA-1000 sidecar to add a SCSI bus and real-time clock to an Amiga 1000.diy
Jul 15, 2026Applesauce+
Applesauce		Connects a modern Mac to Apple and PC floppy drives for disk imaging, flux capture, analysis, and writing.out-of-stock
Jul 15, 2026Beavis Ultrasound PnP
Eric Schlaepfer		Recreates the Gravis Ultrasound PnP ISA sound card around an AMD InterWave chip, with an optional IDE CD-ROM interface.diy
Jul 15, 2026FluxEngine
David Given		A DIY USB floppy interface and cross-platform toolkit for reading and writing unusual disk formats with a conventional PC floppy drive.diy
Jul 15, 2026FujiNet
FujiNet project		Adds Wi-Fi networking and platform-specific peripheral emulation to several vintage computer families.available
Jul 15, 2026Graphics Gremlin
Eric Schlaepfer		Provides MDA and CGA-compatible display modes with 31 kHz VGA output for modern monitors and capture devices.diy
Jul 15, 2026Greaseweazle
Keir Fraser		Connects a modern computer over USB to a separate floppy drive for reading, analyzing, and writing disks at the raw flux level.available
Jul 15, 2026IDE64 V4.2
IDE64 project		Adds CompactFlash and ATA or ATAPI mass storage plus USB PCLink transfers to a Commodore 64 expansion port.unknown
Jul 15, 2026Keyrah V3
Individual Computers		Turns supported classic-computer keyboards, digital joysticks, and analog paddles into USB HID input devices for a modern PC, Mac, or Raspberry Pi.available
Jul 15, 2026KryoFlux
KryoFlux Products & Services Ltd.		A USB floppy controller and host-software package for forensic-quality flux capture, analysis, image conversion, and disk writing.available
Jul 15, 2026Meatloaf
Jaime Idolpx		Emulates Commodore IEC devices and loads files from local flash, an SD card, or network servers over Wi-Fi.diy
Jul 15, 2026MicroMac Performer and Modern Clones
MicroMac, Bolle, and MacEffects		Upgrades compact Macintosh computers with a 16 MHz 68030 and optional 68882 FPU through original vintage cards or modern recreations.diy
Jul 15, 2026MiniPerformer+
hkzlab		Combines an approximately 16 MHz 68030 and optional 68882 on a compact MicroMac Performer remix made for a Macintosh Plus clone.available
Jul 15, 2026Polyphloisboisterous '030
luRaichu		Adds a 16 MHz 68030 to a Macintosh Plus with a compact hobbyist-buildable board derived from the MicroMac Performer.diy
Jul 15, 2026Snark Barker
Eric Schlaepfer		Recreates the 1989 Sound Blaster 1.0 with digital playback and recording, AdLib-compatible synthesis, CMS audio, and a joystick/MIDI port.diy
Jul 15, 2026Snark Barker MCA
Eric Schlaepfer		Implements Sound Blaster-compatible audio for Micro Channel systems with OPL2 synthesis and CPLD-managed bus, interrupt, and DMA logic.diy
Jul 15, 2026SuperCard Pro
CBMSTUFF.COM		Connects a modern computer or serial controller to a 34-pin floppy drive for low-level flux capture, analysis, and disk duplication.out-of-stock
Jul 15, 2026Ultimate 64 Mainboard
1541 Ultimate		Replaces a Commodore 64 motherboard with an FPGA-based board offering modern video, storage, networking, and emulated peripheral functions.out-of-stock
Jul 15, 2026Ultimate-II+ Cartridge
1541 Ultimate		Adds USB-backed disk-image storage, drive emulation, networking, and other emulated peripherals to Commodore 64 and 128 systems.available
Jul 15, 2026XT-CF-Lite V4
Sergey Kiselev		DIY 8-bit ISA CompactFlash adapter that provides mass storage and supports an XT-IDE BIOS extension ROM.diy
Jul 14, 202630Video Display Card Family
ZigZagJoe and Juicy Crumb Systems		Adds external VGA to an SE/30 or IIsi, with selected SE/30 variants also driving the internal CRT in grayscale.out-of-stock
Jul 14, 2026A2FPGA Multicard
A2FPGA project and ReActiveMicro		Combines 480p HDMI output, Apple II and Mockingboard audio, and several video expansions on one FPGA-based card.available
Jul 14, 2026ADB-USB Wombat
Big Mess o' Wires		Bidirectionally converts keyboards and mice between Apple's ADB interface and modern USB HID.out-of-stock
Jul 14, 2026AppleII-VGA / A2 Analog / A2 VidGA / SMC A][ VGA Mini
Mark Aikens, A2 Analog contributors, Infinity Products, Joe's Computer Museum, Laser, and RetroFletch		Generates crisp 640 by 480 VGA from Apple II video memory using a Raspberry Pi Pico bus-snooping card.available
Jul 14, 2026Applied Engineering TransWarp
Applied Engineering		Period 3.6 MHz accelerator with a 65C02, 256K of high-speed memory, and optional 16-bit processor upgrades.vintage
Jul 14, 2026BlueSCSI v2 and Ultra
BlueSCSI project		Open hardware SCSI emulator with SD-backed storage, optional Wi-Fi networking, and host-side management tools.available
Jul 14, 2026Booster 1.x and 2.0 Accelerators
ZigZagJoe and Juicy Crumb Systems		Runs a 68030 CPU and optional 68882 FPU at 47 MHz in SE/30 and socketed modular Macintosh configurations.available
Jul 14, 2026Floppy Emu Model C
Big Mess o' Wires		Uses an SD card to emulate Apple floppy drives and, on supported systems, HD20 or SmartPort hard disks.out-of-stock
Jul 14, 2026IBM 5161 Extender and Receiver Cards
Eric Schlaepfer		Open hardware reproductions of the two interface cards used to connect an IBM PC or XT to a 5161 Expansion Unit.diy
Jul 14, 2026ISP-SIMM USB Programmable ROM
ZigZagJoe		Provides two switchable 8 MB flash banks that can be programmed over USB without a separate ROM programmer.available
Jul 14, 2026Lo-tech ISA XT-CF Adapter rev. 3
Lo-tech		Current 8-bit ISA adapter that lets a CompactFlash card serve as an XT-IDE hard disk in an IBM PC or XT-class computer.available
Jul 14, 2026Mac ROM-inator II Carbon
Big Mess o' Wires		Replaces the stock ROM SIMM with a 32-bit-clean flash ROM, bootable ROM disk, and HD20 support.out-of-stock
Jul 14, 2026Mac Sync-inator
Big Mess o' Wires		Actively converts classic Macintosh DB-15 video sync signals for use with compatible VGA displays.out-of-stock
Jul 14, 2026Macintosh SE/30 Logicboard Recreation
Bolle		Redesigns the SE/30 logic board as a buildable replacement with Gerbers, placement data, a BOM, and recreated programmable logic.diy
Jul 14, 2026MicroMac Carrera040
MicroMac		Period 68040 accelerator originally made for a Macintosh IIci cache slot and usable in an SE/30 only through a specialized adapter.vintage
Jul 14, 2026Mockingboard v2.2
ReActiveMicro		Modernizes the Mockingboard A sound card with six voices, a 3.5 mm output, and an input for the Apple II motherboard audio.available
Jul 14, 2026Orchid Tiny Turbo 286
Orchid Technology		Period accelerator that upgrades a 4.77 MHz 8088 IBM PC or XT with an 8 MHz 80286 processor and 8K of cache.vintage
Jul 14, 2026PicoMEM
PicoMEM project		Current multifunction 8-bit ISA card that adds emulated storage, memory, networking, and USB or SD-connected devices to PC/XT-class computers.available
Jul 14, 2026SEthernet/30
rhalkyard		Open hardware 10/100 Ethernet card designed around a modern controller for the Macintosh SE/30 PDS.diy
Jul 14, 2026UltraWarp 13MHz Accelerator
ReActiveMicro		Accelerates an Apple IIe with a WDC 65816 processor and a replaceable 13 MHz oscillator.available
Jul 14, 2026Uthernet II
A2RetroSystems		Adds 10/100 Base-TX Ethernet with a W5100 hardware TCP/IP stack and support from several Apple II networking applications.available
Jul 14, 2026wDrive Disk Drive Emulator
Mfa2 Workshop		Uses an SD card to emulate Apple II floppy and SmartPort devices from common floppy and hard-disk image formats.out-of-stock
Jul 14, 2026Yellowstone Universal Disk Controller
Big Mess o' Wires		Combines several Apple II floppy and SmartPort controller roles on one expansion card for old and modern disk devices.out-of-stock