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/