Ultima Online

AskChopper.com
Bugs information, submit a bug, rares information, skills essays, and detailed news on exploits.
http://www.askchopper.com/

Auric's Ultima Moongates
Ultima game series trivia and history, music, and message board.
http://www.moongates.com/

GameSpot's Guide to Ultima Online
Beginner information on creating a character, using banks, developing skills, and third-party tools such as UO Trace, UO Monitor, and ICQ.
http://www.gamespot.com/features/uosg/

Markee Dragon
Daily news, history, trading, screenshots, rares information, rares spawn map, house placement information, and forums.
http://www.markeedragon.com/

A Nocturne for Chaos
Sections on the latest news, homes, rares, skills and character development.
http://noctalis.com/dis/uo/

Ultima Dragons
Large virtual club dedicated to discussing Ultima Online, and helping others in Ultima Online. Originally founded in 1992 on Prodigy.
http://www.udic.org/

UO Compendium
Game information and rants.
http://uo.gamesentry.com/

UO Powergamers
News, exploit information, strategy and skill essays, and forums.
http://www.uopowergamers.com/

UO Vault
Community news, player-run events, editorials, and a house decorating essay.
http://vault.ign.com/uovault.html