Alternatives and similar repositories for addons

Users that are interested in addons are comparing it to the libraries listed below

• Kroc / DOOM-Crusher
  Shrinks DOOM resource files: PK3s (ZIP files), WADs, PNGs & JPGs.
  ☆17Updated 2 years ago
• fgsfds / Legend-of-the-Seven-Paladins-3D
  Unofficial English translation of the Taiwanese 1994 FPS and the very first game ever made using Build Engine
  ☆18Updated 5 years ago
• Hendricks266 / SWP
  A Shadow Warrior Port by ProAsm
  ☆16Updated 7 years ago
• RedemptionEngine / redemption
  GZDoom fork that focuses on changing non-negotiable aspects of GZDoom for QOL purposes
  ☆13Updated last year
• emileb / gzdoom
  GZDoom adds an OpenGL renderer to the ZDoom source port.
  ☆16Updated last week
• LukeKenTeam / LukeKen3D
  Free assets and Free Open Source Software game for EDuke32 and DN3D engine (Based on Build Engine).
  ☆12Updated 2 months ago
• dibollinger / amcduke32
  Fork of eduke32 for the AMC Squad.
  ☆19Updated 3 months ago
• LordMisfit / NR-IotDM
  Naferia's Reign: Invasion of the Dark Mistress (For Duke Nukem 3D: Atomic Edition w/ EDuke32)
  ☆12Updated 6 years ago
• eukara / freetfc
  Clean-room reimplementation of Team Fortress Classic in QuakeC.
  ☆26Updated last year
• NightFright2k19 / duke3d_widefix
  Widescreen Fixes for Duke Nukem 3D
  ☆41Updated last month
• Forevener / DRPGSEL
  DoomRPG SE Launcher
  ☆18Updated 2 years ago
• fgsfds / Liquidator-3D
  Russian Build Engine game translated to English and modified to work with modern ports
  ☆26Updated 3 months ago
• davidxn / BDLite
  BDLite, BDLite, it's like Brutal Doom but without so much shite
  ☆20Updated 3 years ago
• eukara / freegearbox
  Clean-room reimplementation of Opposing Force in QuakeC.
  ☆17Updated 11 months ago
• caligari87 / Oblige
  A random map generator for Doom (community maintenance repo)
  ☆17Updated 4 years ago
• bibendovsky / rtcw
  Return to Castle Wolfenstein (SP/MP/ET)
  ☆44Updated 3 weeks ago
• SoDOOManiac / So-Doom
  So Doom is about adding features to Crispy Doom that Fabian won't implement :)
  ☆25Updated last week
• Q3Rally-Team / q3rally
  Open-source survival racing game on the ioquake3 engine.
  ☆63Updated last month
• GeorgePieVG / lastermaul
  Lastermaul, A Hexen-compatible spin-off to Blasphemer
  ☆25Updated 7 months ago
• nashmuhandes / SpriteShadow
  Universal mod for GZDoom that adds shadow sprites underneath actors.
  ☆25Updated 4 years ago
• maraakate / daikatana
  The unofficial Daikatana 1.3 patch including Linux- and FreeBSD-Ports
  ☆40Updated last week
• MadDeCoDeR / Open_Platform
  Port your games on other platforms easier and simplier.
  ☆26Updated 4 months ago
• HandsOfNecromancy / HandsOfNecromancy-Engine
  ☆12Updated 11 months ago
• Immorpher / Bandither
  Bandither is a non-linear color banding and dithering shader. It quantizes each color channel similar to 3D graphics hardware of the 1990…
  ☆23Updated 2 years ago
• Magic-Nipples / Duake
  ☆48Updated last year
• CireG / Zauberer
  Open content replacement for Hexen assets
  ☆49Updated 4 years ago
• hogsy / chronon
  This is an open-source reimplementation of Anachronox, built on top of the Quake 2 engine (which funnily enough is the same engine Anachr…
  ☆59Updated 6 months ago
• nekonomicon / hlsdk-xash3d
  Half-Life SDK from original Xash3D engine. Actual sources now here: https://github.com/FWGS/hlsdk-xash3d
  ☆11Updated 6 years ago
• madame-rachelle / hgzdoom
  GZDoom fork
  ☆15Updated 4 years ago
• Drugod / Bloom
  Official BlooM project repository for Doom II & GZDoom / Zandronum
  ☆22Updated 5 months ago