There's links to russian sources about ADoM and links to other rogue-like games. I think you can get english sources about ADoM on almost any such site, many of them are twins in different clothes. :-)

trismegist.narod.ru	-	The Temple of Fruit Yogurt.
fido7.ru.game.adom	-	Russian FidoNet conference.
adom.newmail.ru	-	Good source and russian forum.
adom.wallst.ru	-	Russian site, but Demo Workshop has no language. :-)
firetower.narod.ru	-	Some russian-language spoilers.
adom.narod.ru	-	Dead source. :-)
rga.boom.ru/rga	-	Site of fido7.ru.game.adom echoconference, under construction.
adomchamp.narod.ru	-	ADoM championship for russian people
www.geocities.com/adombot	-	This is the little homepage for AdomBot 3.
timeold.r2.ru	-	Russian rogue-like game Time of Old Ages (russian lang.)
www.avanor.com	-	Avanor - belorussian rogue-like game (english lang.)
no site :-)	-	Lanceran - belorussian rogue-like game (english lang.)
http://www.arx-team.narod.ru	-	This site partly dedicated to roguelike development (russian lang).
P.S. www.adom.de	-	Official site of ADoM.

Then links to other rogue-like games...

ABYSS
  http://www.helsinki.fi/~mxmattil/abyss.htm
Alphaman
  http://www2.tripnet.se/~head/games/dos/alphaman.htm
Angband
  http://guide.infoseek.com/Topic/Computer/Games/Genres/Role_playing/Angband_computer_game
  http://orthanc.chat.ru/
  http://thangorodrim.angband.org/
Dungeon Crawl
  http://olis.net.au/~zel/index.html
Dungeon
  http://www.ios.net/dungeon/Dungeon.htm
Interhack
  http://mcs.une.edu.au/~dbentley/interhack/index.html
JSHack :)
  http://www.aphasic.com/jshack/
LARN
  http://www.win.tue.nl/games/roguelike/larn/index.html
Legend of Saladir
  http://www.evitech.fi/~ernomat/index.html
L.o.R.D.
  http://nwinfo1.vsb.cz/~.L96207.stii.fei/
Morabis
  http://rd-soft.com/Extended.asp?name=Morabis
Morgul
  http://www.lysator.liu.se/tolkien-games/entry/morgul.html
Moria
  http://www2.ecst.csuchico.edu/~beej/moria/
Nethack
  http://pinky.wtower.com/nethack/
  http://www.nethack.org
Omega
  http://www.alcyone.com/max/projects/omega/
Portals
  http://www.jyu.fi/~shang/portals/index.html
Rodun
  http://members.xoom.com/jrocho/
SLASH'EM
  http://members.tripod.com/~WAC/nethack/
UMoria
  http://www.geocities.com/SiliconValley/Pines/7376/moria.html
UrW
  http://www.jmp.fi/~smaarane/urw.html
VOtheD
  http://www.geocities.com/SunsetStrip/Venue/9476/noframes.html
War of the Runes
  http://www.angelfire.com/biz/aweplay/war.html

     And three link more...

  http://www2.krisalis.co.uk/wwwdheb/links.html
  http://www.win.tue.nl/games/roguelike/
  http://cyclone.swa.com/roguelike/