Notes

Wikia - Doom Wiki
Doomworld
DRD Team
WildWeasel's Doom Armory
Sir Robins DooM Castle
Lee Killough's Doom pages
Classic DOOM Walkthroughs and guides, level maps, version comparisons, passwords, site and forum links and more for console and PC Classic Doom games.
Realm667
Team Hellspawn Classic Doom wads, voxels, and other resources.

DoomGate:
Doom Help Service (DHS)
Doomgate - Doom
The All-Time Best Doom Levels

The Dark Side of Phobos DooM Remix Project

DRL (D**m, the Roguelike) is a fast and furious coffee-break Roguelike game, that is heavily inspired by the popular FPS game Doom by ID Software.

Classic DOOM . com Walkthroughs and guides, level maps, version comparisons, passwords, site and forum links and more for console and PC Classic Doom games.
Comparison of classic Doom games This document provides information on various Classic Doom, Ultimate Doom and Doom II games, and compares the game-console and handheld versions to the original PC editions, and to each other.

Doomshack.org
Doomshack.org - archive of old Doom sites
Doomshack.org - Doom sites

YouTube - DOOM’s Development: A Year of Madness by WeAreDevelopers.
YouTube - Why Doom is Awesome: Binary Space Partitioning by ShreddedNerd.
YouTube - A closer look at the Super NES DOOM Source Code Release | MVG on 2020-07-20, by Modern Vintage Gamer.

Doom64 EX - A recreation of a N64 classic
Mod DB - Brutal Doom 64

GitHub - atsb/Doom64EX-Plus An improved modern version of Doom64EX. Moddb - Doom 64 - Downloads for EX+ versions of PWADs.
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ZDoom for ZDoom and GZDoom.
Skulltag Discontinued.
Zandronum is a client-server multiplayer-oriented source port based on Skulltag. It was forked from its parent project on June 3, 2012, continuing the development of the latest Skulltag 98e.
GitHub - IgeNiaI/Q-Zandronum A Zandronum 3.0 fork with improved netcode, configurable movement and many small tweaks.
GitHub - ptitSeb/zandronum Zandronum, with ARM support. Status: working.
GitHub - doomjoshuaboy/zandronum-arm Zandronum, with ARM support. Status: Testing Needed.
ZDaemon online multiplayer Doom.
EDGE discontinued.
hyper3DGE based on EDGE.
DelphiDoom, GitHub - DelphiDoom.
PrBoom
PrBoom+ zie ook hier voor Doom+ en Doom2+.
GitHub - sultim-t/prboom-plus-rt Doom Ray Traced.
GitHub - kraflab/dsda-doom a fork of prboom+ with extra tooling for demo recording and playback, with a focus on speedrunning.
Doomsday, Doomsday Engine
Doom Legacy
Vavoom, GitHub - janisl/vavoom.
Chocolate Doom is a Doom source port which aims to reproduce the behavior of Vanilla Doom as closely as possible. Command line arguments
GitHub - fabiangreffrath/crispy-doom Crispy Doom is a limit-removing enhanced-resolution Doom source port based on Chocolate Doom.
Odamex multi-platform op multiplayer gerichte Doom port. GitHub - odamex/odamex
SMMU
ReMood gebaseerd op Doom Legacy.
Windoom
The Eternity Engine, newer versions available at http://eternity.mancubus.net/. See also: GitHub - team-eternity/eternity.
GitHub - atsb/glDoom 'that' source port from the 90's, resurrected and loved!
glDoom. See also: The Doom Wiki - glDoom
Sprinkled Doom is a fork of the latest Chocolate Doom with an emphasis on slight modernisation, allowing for Widescreen and enhancements such as Always Gibbing enemies.
Pooch is an extremely conservative MBF port to SDL2. It is identical to DOS MBF. DoomWiki.org - Pooch
GitHub - Wolf3s/W3SDOOM s the continuation of pooch that it has some many several bugfixes.
GitHub - fabiangreffrath/woof Woof! is a continuation of Lee Killough's Doom source port MBF targeted at modern systems. DoomWiki.org - Woof!
GitHub - doomtech/winmbf WinMBF is a Doom source port project by Team Eternity. It is a direct port of the MBF port by Lee Killough to operating systems that support the SDL library. It removes the original low-level system code and replaces it with a modification of the code used by the Eternity Engine. DoomWiki.org - WinMBF
GitHub - team-eternity/WinMBF Port of Lee Killough's MBF DOOM source port to SDL-supporting platforms.
DoomGL
NTDOOM is a port of id Software's best-selling game DOOM to Win32 systems, targetted mainly at WinNT 4. It is based on the original DOOM source code (doomsrc.zip), and originally ported to WinNT by Petteri Kangaslampi. The current version also includes modifications from other DOOM ports.
DOOM Retro The classic, refined DOOM source port. For Windows PC. See also: GitHub - bradharding/doomretro.
SourceForge - Doom DOS Ports by atsb.
SourceForge - RZDoom is a fork of ZDoom 2.8.1 with the goal of continuing the development of classic Zdoom but with an emphasis on Performance, Quality, Stability, Maintainability and Correctness. By atsb.
SourceForge - ReBOOMis a direct port of BOOM 2.02 to SDL2 aiming to be as close to the original as possible while adding Quality of Life features to it, such as always on stats. By atsb.
SourceForge - Sprinkled Doom is a fork of the latest Chocolate Doom with an emphasis on slight modernisation, allowing for Widescreen and enhancements such as Always Gibbing enemies. By atsb.

GitHub - doomtech repository copies of several Doom engines.

Windows Mobile
Cell Doom (Softpedia Download)
DoomGLES for PocketPC

Doomworld - A Slightly Condensed Genealogy of DOOM Source Ports

Fabien Sanglard's non-blog - Doom engine code review

Master Servers

• Primary - master1.odamex.net, udp/15000
• Secondary - master2.odamex.net, udp/15000

Source:OdaWiki - Master

Default server port:

• udp/10666

Source:OdaWiki - How to run a server

GitHub - tm512/odactl Server controller for the Odamex doom source port.

The Ultimate Simpsons Doom vereist ZDoom.
Brütal Doom takes Doom into a whole new level. It makes the game much more violent than before. There's much more blood, plus it adds unique gibs, death animations, dismemberments, headshots, executions, fire and explosion particles, flares, shadows over all objects, and much more.
Doomworld - DOOM 4 VANILLA v3.2 Doom 2016 on the vanilla Doom2 engine.

TheGamer - Doom: 10 Mods You Didn't Know You Needed Until Now

GitHub - Doruk-Aksoy/DnD Repository for the RPG Doom mod Death and Decay.

GhostBusters DooM2
ZBlood: The Blood TC for ZDoom
Hacx
Harmony
GoldenEye Doom2

Doomworld /idgames database
Doom Wad Station
The Top 100 WADs Of All Time
WADs In Progress bevat screenshots van WADs waar aan gewerkt word.

Freedoom a complete free content game based on the Doom engine.

Whispers of Satan is a 32 level megawad for Doom 2 which requires a Boom Compatible source port to play. We started this project late in 2006 and aim to get it finished sometime in 2008.
Erik Alm's Page of Doom auteur van Scythe en Scythe2 en de Europa serie.
No Rest for the Living
DOOM The Abyss is an add-on for DOOM II with 24 new levels. This addon was first publicly released September 1995.

SLIGE Doom level generator. Also look here. Automatic SLIGE megawad! Every day, this automatically generates a totally new 32-level Doom megawad using the random level generator SLIGE.

OBLIGE is a random level generator for various classic games, including DOOM, DOOM II, and Heretic. The goal is to produce high quality levels which are fun to play. Review. Modified version:ObHack
OBSIDIAN A community continuation of the OBLIGE Level Maker, originally by Andrew Apted, combined with ObAddon. See also: GitHub - obsidian-level-maker/Obsidian.

Doomseeker is a cross-platform server browser for Doom. The goal of Doomseeker is to provide a smooth, consistant experience for Doom players regardless of port or platform. Doomseeker provides support for Chocolate Doom, Odamex, Vavoom, and Zandronum. With its plugin system support for even more can be added.

Eureka is a cross-platform map editor for the classic DOOM games. The supported operating systems are Linux (and other Unix-likes), Windows and MacOS X.

ZenNode A text-mode BSP builder for DOOM WAD files. ZenNode will rebuild the BSP, REJECT map, and BLOCKMAP structures of a WAD file.

Dr Sleep's DOOM Apothecary - List of Nodes and Reject Builders