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

TeensyROM is a ROM Emulator, Fast Loader, MIDI and Internet cartridge for Commodore64/128

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

A Scala Commodore 64, 128, VIC20, CBM2 and SuperCPU emulator

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

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

GORILLA.BAS port to CP/M in Turbo Modula-2. Supported terminals: VT52, VT100, ANSI, ADM-31, KayPro, C128, Memotech monochrome, CPC / Zenith Z19

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

Some routines to handle a C64 sprite multiplexer

Eight Queen Puzzle - portable CP/M version, written on Commodore 128

Double the clock speed of Z80 in C128

C128 MMU 256K RAM expansion

Simple Console 6502/C64 Emulator written in C++ for Portability (ported from simple-emu-c64) ***AND see branches for embedded, LCD versions

Hardware design of Magic Desk compatible C64 cartridge up to 1024k

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

The retro-computing systems

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

Terminal 6502 Emulator with Commodore 64, 128, Vic-20, PET 2001, and TED: C16, Plus/4

D71 and D81 image writer tool for use with the 1541Ultimate 2 or 2+. Commodore 128 version.

RAM/ROM expansion for 1541-II that supports DolphinDOS 2 and patched JiffyDOS/SpeedDOS/CBM DOS to cache whole tracks in extra RAM

Replace the Commodore Datassette with any audio source!

The Servant for C128 patched for SD2IEC / U2+ and 256K C128s

Examples and tests for programming the Commodore 128 and its features.

Server for hosting software via HTTP for use with Meatloaf. A Commodore 64/128/VIC20/+4 multi-device emulator.

The Innuh's pyramid: a multiplatform interactive fiction game

Python tool for converting modern audio into 8-bit or 4-bit formats, ideal for Commodore 64 (with or without MSSIAH) and other retro systems.

DolphinDOS 3 board for (but not only) C128DCR internal 1571

USB adapter for the Commodore C1351 mouse.

Automatically set the GEOS clock from the onboard RTC of a 1541 Ultimate II/II+

A firmware patch for Commodore 1571 drive and internal C128D drive enabling RAM expansion use for track cache