Software Automatic Mouth - Tiny Speech Synthesizer

SDK for developing with the llvm-mos compiler

Byte-aligned, efficient lossless packer that is optimized for fast decompression on 8-bit micros

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

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

Free open-source compressor for apLib with 5-7% better ratios

GTUltra - Extensively modified GoatTracker Stereo (2.76) version. With many new features. See the GTUltra.PDF file for full details

C64 Bitcoin miner

A free, open-source compressor for the ZX0 format

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

Multidirectional scrolling game framework for the C64. Its modified version is used in the game MW ULTRA.

Simple OS kernel with BASIC interpreter for x86

C64 music debug output utility

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

C64 Emulator in ESP32

64tass - cross assembler for 6502 etc. microprocessors - by soci/singular - [git clone from the original sourceforge repo]

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

Sources for most of my C64 productions

Mirror of the awesome C64 Debugger project hosted on SourceForge

USBSID-Pico is a RPi Pico (RP2040/W RP2350) 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