Chocolate Doom is a Doom source port that is minimalist and historically accurate.

A portable, enhanced source port of Doom, Heretic and Hexen.

Doom Launcher is a doom launching utility and database for custom wads and pk3s

A community continuation of the OBLIGE Level Maker, originally by Andrew Apted, combined with ObAddon.

A limit-removing source port of Doom, Heretic and Hexen. It has numerous vanilla bug fixes, enhanced 640x400 and 1280x800 rendering resolutions, improved game palettes and offers many optional aesthetic game enhancements along with the maximum possible translation to the Russian language.

Hexen II: Hammer of Thyrion -- A cross-platform port of Hexen II game.

Source port of Doom, Heretic, Hexen and Strife developed in Delphi

PSVita port of Chocolate Doom.

a wad launcher for the terminal

ACS/ACS95/BCS compiler

Small, functional and simple source ports, created with help, efforts and bits of code from people around the world.

Hexen II port for Playstation Vita.

Curses-based Doom WAD file editor

HXDD: A Heretic and Hexen Wad Merger.

Hexen II port for Nintendo 3DS

Main Repo for "Aetherius" (for Doom1/2 w/ GZDoom)

DoomViewer

Doom Font Creator

A random downloader of Doom maps from the idgames repository.

A CLI tool made in Golang to check the validity of a DOOM-engine WAD file.