Millfork: a middle-level programming language targeting 6502- and Z80-based microcomputers and home consoles

Commodore 64 OS running on Atari 8-bit hardware

Mad Pascal Compiler for 6502 (Atari XE/XL, C64, C4Plus, Neo6502)

source code for Worms? by David S. Maynard

6502, 65816 assembler (Atari XE/XL)

Various reverse engineered source code

This is a mashup between BlocklyVN32X and 8Bit-Unity. It allows you to make Visual Novels for classic 8bit computers and consoles, using a visual scripting language.

Psychedelia/Colourspace by Jeff Minter

Atari 8 bit Text Window and FujiNet Library in C (CC65)

RetroLoad.com is a web application for converting tape archive files of historical computers into sound.

Alternate Reality - The Dungeon - Atari 8-bit

Code that runs the Atari 8-bit Twitter bot at https://twitter.com/Atari8BitBot

Firmware for ESP8266 to emulated D: and R: for PLATOTerm64 on Atari 8-bit

Atari Inform Interpreter

Ghidra Loaders and FileSystems for retrocomputing platforms

Attack of the Mutant Camels (1983) by Jeff Minter

Scramble-like game on Atari 800 XL in Action! programming language.

Port of the famous Sokoban for Atari 800XL with over then 4400 levels on single DD disk.

A small font originally designed for an Atari 800 terminal emulator.

2020: Atari 800 emulation using a Teensy 4.0, 3.6 or 4.1 with a standard USB keyboard for input. This is a simplified expansion of Jean-Marc Harvengt's Multi CompUter Machine Emulator M.CU.M.E