Diseased Sons

Details the Diseased Sons, a Nurgle Chaos Space Marine chapter.
http://nurgle.muschamp.ca

Worldeaters: Chosen of Khorne

Site for worshipers of Khorne to gather and discuss tactics, painting and hobbies.
http://www.angelfire.com/games4/worldeaters

Scotts Warhammer 40k Site

Includes information about the Chaos space Marines and Terrain building.
http://www.freewebs.com/scotts40k

Cha'Los Craftworld / Four Winds of Chaos

Includes unofficial units, rules and background fiction for the Four Winds of Chaos.
http://www.farseertyross.pwp.blueyonder.co.uk

Pure Chaos

Home of the Iron Talons chapter. Includes a site forum, army lists and painting tips.
http://members.lycos.co.uk/pizzaguy234/

Dark Apostle

Dedicated to Chaos, mainly Nurgle, and Space Skaven.
http://www.angelfire.com/scifi2/inq40k/

The Dark Dimension

Information on the gods and their armies.
http://www.freewebs.com/the_dark_dimension/

The Skull Throne

Includes forum and chat about Khorne.
http://pub47.ezboard.com/btheskullthrone

Death to the False Emperor

Includes forums on the other races.
http://s7.invisionfree.com/DTTFE/