Powerful macro (cross) assembler package for several CPUs

Emulations (running on Linux/Unix/Windows/macOS, utilizing SDL2) of some - mainly - 8 bit machines, including the Commodore LCD, Commodore 65, and the MEGA65 as well.

Collection of cartridges, adapters, and replacements for the Commodore C64

vAmigaWeb - Amiga Emulator for iPad iPhone Android and the web.

Portable chess game in C. Commodore 64, Apple 2, Atari, Oric, Commander X16, curses terminal, etc.

cc65 library for accessing the DOS and network functions of the Ultimate II+ cartridge and Ultimate 64 motherboard

Open Hardware Fast Loader cartridge for the Commodore 64 and 128 - DO NOT USE!!!

Use a Raspberry Pi as fast mass storage solution for your Commodore 8-bit computer using just the datassette port.

File manager for several Commodore 8-bit computer models.

Multiplatform 8-bit Commodore home computer family emulator written in C++ using SDL2.

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

Firmware for the MEGA65 DM65PIC

tedplay is media player based on a stripped down Commodore plus/4 emulator for playing Commodore 264 music format files similar to SIDplay for the C64. It also copes with the popular PSID files of the Commodore 64.

A fun language compiler for 8-bit systems (6502, 6510, Z80, Atari, Commodore, NES, ZX Spectrum, Atmos) with great optimization.

USBSID-Pico is a RPi Pico (RP2040/W RP2350/W) based board for interfacing one or two MOS SID chips and/or hardware SID emulators over (WEB)USB with your computer, phone, ASID supporting player or USB midi controller

Chess game for C64/128 GEOS

SD2IEC adapted to work with Arduino Mega 2560 and ESP8266, with some other nice additions.

Print a picture from a modern PC with an old-fashioned Commodore MPS 803 compatible printer

A program which displays directories of Commodore 64 & 128 compatible archive files

A SID player for RP2040 microcontrollers