Sidekick64: A Versatile Software-Defined Cartridge for the C64, C128, C16, plus/4, and VIC20

PHP library to generate linear and bidimensional barcodes

SIDKick pico is an inexpensive dual-SID-replacement for the C64 and C128

RAD Expansion Unit for C64/C128

SIDKick -- the first complete SID 6581/8580-drop-in-replacement that you can build yourself

A Commodore IEC Serial multi-device emulator

A Z-machine interpreter for the Commodore 64 and similar computers

Minima is an homage to the 8-bit Ultima games (especially Ultima II - Ultima V) written in the PICO-8 environment.

Hardware design of Magic Desk compatible C64 cartridge up to 512k

Hardware and software project for the Commodore 128.

CP/M for the Commodore 128

RAD-Doom (Doom on C64/C128 using the RAD Expansion Unit)

A HAT for the Raspberry Pi, that allows to emulate the Commodore C64 floppy disk drive 1541. Switches and IEC-Bus detachable.

Anteform is a retro weird detective game written using the Minima Engine for PICO-8.

C128 MMU 256K RAM expansion

Double the clock speed of Z80 in C128

Allow a modern USB keyboard to be used with a Commodore 128 in place of the original keyboard.

A little PCB to buld a SCART cable for console and old computers

CIA-IDE hard disk drive interface for C64/128 for IDE drivers with GEOS and IDE64 drivers

A disk operating system for commodore 64/128