Single-file public domain libraries for C/C

SoundFont2 synthesizer library in a single C/C file

Minimal modern efficient cross platform 2D graphics painter in C

Woof! is a continuation of the Boom/MBF bloodline of Doom source ports.

SDL2 port of Rise of the Triad

Reverse-engineered ports of Build games using EDuke32 engine technology and development principles (NBlood/Rednukem/PCExhumed)

The DarkPlaces Quake engine, created by LadyHavoc. Official Git repository (replaces SVN).

The Yamagi Quake II client

It's a Doom editor

An importer addon to import Quake BSP files.

A VMF importer for Godot Engine/Redot Engine

Quake .map support for Godot 4.2

Programmer's Dehacked

Shockolate - A minimalist and cross platform System Shock source port.

Preset-oriented graphical launcher of various ported Doom engines (an alternative to ZDL)

Desktop mascot software powered by MMD for Windows and macOS

Improve keyboard comfort and usability with advanced customization

A high-level Emacs Lisp RDBMS front-end

Making it easier to work with shaders

Notepad official repository

Assorted, mostly own work on retro games

An FT2 compatible music tracker

WLA DX - Yet Another GB-Z80/Z80/Z80N/6502/65C02/65CE02/65816/68000/6800/6801/6809/8008/8080/HUC6280/SPC-700/SuperFX Multi Platform Cross Assembler Package

Official music courses from the Trane Project

An automated practice system for mastering complex skills

A modern Anki custom scheduling based on Free Spaced Repetition Scheduler algorithm

A game made by the Celeste developers in a week(ish, closer to 2)

DarkRadiant is the map editor for The Dark Mod and other idTech4/Doom3-based games

Blender addon for baking images

fdm source code