Emulates Mac Plus, PC, & Atari ST in the browser using WebAssembly

A latency-hating emulator of 8- and 16-bit platforms: the Acorn Electron, Amstrad CPC, Apple II/II+/IIe and early Macintosh, Atari 2600 and ST, ColecoVision, Commodore Vic-20, MSX 1, Oric 1/Atmos, Sega Master System and Sinclair ZX80/81.

EmuTOS is a Free operating system for Atari ST computers, and more.

A large repository of Atari ST (and family) source code

RetroTxt is the WebExtension that turns ANSI, ASCII, NFO text into in-browser HTML

Unix-like kernel for Atari ST and compatible computers

A port of the Atari ST game SunDog: Frozen Legacy (1984) by FTL software

Peasauce Interactive Disassembler

small footprint C standard library for Atari ST and m68k-atari-mint cross compiler toolchain

Atari ST/STe core for MiST

A few libs, including a lot of Commodore / CSG parts

Open Kick-Off is a fun rewriting attempt of the cult football game Kick Off 2 designed by Dino Dini and released in 1990 by Anco for the Atari ST and the Commodore Amiga. It is written in Java with the help of libGDX.

volksFORTH is a 16bit Forth System maintained by the German Forth Gesellschaft e.V.

Library for creating Atari ST software

Various AtariST/STE stuff

68000 assembly tutorials for Atari ST by perihelion of poSTmortem

Forth system for M68K machines, origin: http://hardcode.de/us/index.html

Atari ST version of the replay source for Arkos Tracker 2 (http://www.julien-nevo.com/arkostracker/)

A multiplatform command line application to query csv files using a sql like syntax

A Forth interpreter/compiler and IDE for Atari ST

A wiki to keep track of homebrew and unofficial hardware for retro computers and old consoles

68Kemu is a CPU emulator for Atari TOS/MiNT operating systems. It allows running standard 68000 software using an emulated 68000 CPU, while the OS itself still runs using the native CPU. This provides the best compromise between compatibility and speed.

Verilog implementation of the Atari ST IKBD

Solution for multisync switch for Atari ST/STE.

Visual display and analysis of Tim Follin's Atari ST sound routine.

libc variant for TOS and FreeMiNT OS

A collection of ansible playbooks to build the ST Mint distribution

Complete source to Alice Personal Pascal, including Atari ST version with GUI.

Tool for conversion of Atari ST YM2149F to SN76489 chip tunes

Sc68 Atari ST and Amiga music player