The Atari ST/Amiga/PC game from 1991. It is "Return of Medusa", which is "Rings of Medusa 2".

Source code and data for https://demozoo.org/productions/374487/

maxYMiser replay routine

ATARI-ST SNDH Archive music browser/player

another multi-formats music player

A simple shoot-em-up for the Atari STE with 50fps refresh, hardware scroll and particle system

PiSCSI allows a Raspberry Pi to function as emulated SCSI devices (hard disk, CD-ROM, and others) for vintage SCSI-based computers and devices. This is a fork of the RaSCSI project by GIMONS.

Retro Debugger is a multiplatform debugger APIs host for retro computers: C64 (Vice), Atari800 and NES (NestopiaUE).

Connect USB keyboard and mouse to Atari ST using a Raspberry PI emulating the HD6301 keyboard controller

Atari-ST version of Shrinkler Amiga packer

Open Source HTML5 Puzzle Game Engine

Fork of Hatari with support for GUI debugging

Fullscreen Atari STe (2MB) demo by The Arctic Land (T.AL)

Enhancements to the Atari ST version of Lotus Esprit Turbo Challenge to support STE hardware features

Atari Lynx and Jaguar Macro Assembler

MOD Player routines for ATARI STE to be used in fullscreen demos

Atari Falcon 030NG

Collection auf ST Demoscene Diskmags

Scripts to simplify analysis of Atari TOS code with Ghidra (software reverse engineering framework)

STinG driver for Asix USB-to-Ethernet adapters

6502 cross-assembler with original syntax extensions

6502 cross-assembler with original syntax extensions

WUDSN IDE

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

Sample code for GODLIB library

Tools for reservoir gods libraries

Simulation model of a baseband 802.11p transceiver

Motorola 68k implementation of decompression code for LZ4 (https://github.com/lz4/lz4) and LZSA (https://github.com/emmanuel-marty/lzsa)