Doom Legacy Wads
- Collection of WADs which work with Legacy, with descriptions and downloads. Also technical information, screenshots and original artwork.
- http://dlw.doomwadstation.com/

Doom Underground
- Reviews and screenshots of add-on levels.
- http://games.moria.org.uk/doom/du/

JDoom Models
- Models for JDoom port. [English/Polish]
- http://morgurth.dmkhost.net/

Doom Wad Station
- Personal site with WADs. Also reviews of other levels and a collection of downloads.
- http://www.doomwadstation.com/

ZDaemon
- Multiplayer client / server port. Contains beginner's guides, strategy guide, FAQ, forums and a game launcher.
- http://www.zdaemon.org/

GoldenEye Doom2
- Total conversion with a Bond theme. Downloads, screenshots and information available.
- http://goldeneye.newdoom.com/index2.shtml

Erik Alm's Page of Doom
- Personal site with new levels.
- http://www.doom2.net/~erik/

Bird Nest Designs
- 32-level deathmatch WAD for ZDoom.
- http://birdnestdesigns.com/

Geniacs Doom Wad Played List
- One-line descriptions for a large number of add-on levels.
- http://www.geniac.net/doom.htm

Karthik 82
- Personal site with reviews and new levels.
- http://karthik82.com/

Holger & Bjorns Doom Stuff
- Infinity, Serenity and Eternity, new episodes for Doom, and other new levels.
- http://www.hermans.org/doom/

Chris' Shockwaved Doom Page
- Personal site with original add-on levels.
- http://met.open.ac.uk/group/cpv/chris_doom.html

Doomer's Recess
- Personal site with reviews and downloads. Also includes the megawad project "2002 A Doom Odyssey".
- http://home13.inet.tele.dk/CNH/

TeamTNT
- Icarus, Eternal, TNT Evilution, several deathmatch packs, and other projects.
- http://www.teamtnt.com/

Parallel Team
- Various episodes including Parallel Dimension I and II, and Fragfest Initialised.
- http://www.doomworld.com/parallel/