Chimeric
Resources for UnrealScript programming.
http://www.planetunreal.com/chimeric/
Lode's Unreal Zone
Includes editing tutorials for lighting and movers.
http://www.planetunreal.com/lode
Oddities
Coding tutorials for creating unique game modifications.
http://www.planetunreal.com/oddities/
Sinnical's Unreal
Information on maps, screenshots of works in progress, links, and news.
http://www.freewebs.com/sinnical/
Squirrelinabox Technologies
Offers maps for capture-the-flag as well as a report for Unreal Tournament 2003.
http://siab.unrealplayground.com/
The Mutation Device
Tutorials, utilities, and forums devoted to creating mutators.
http://www.planetunreal.com/mutation/
Unreal University
Two-day tutorial covering techniques for creating mods for the Unreal Tournament 2004 game engine held at North Carolina State University in Raleigh, North Carolina.
http://cde.ncsu.edu/uu2003/
UnrealWiki
Open community documentation for UnrealEngine based modification development.
http://wiki.beyondunreal.com/wiki/
World of Unreal Maps
Links, music, tutorials, and map and texture downloads.
http://www.caterman5.freeserve.co.uk/
Yahoo! Groups: Unreal Editing
Mailing list archive and subscription information.
http://groups.yahoo.com/group/UnrealEditing/