Call of the Horn - Main WoT d20 Forums are found here.
Dragonmount - Very Large WoT Community
Encyclopedia WoT - Just as it says, everything there is to know about WoT
Old Tongue Dictionary - One of the many Dictionaries out there, No longer updated
StoneDog's Wheel of Time Page - Very nice WoT Fansite, No longer updated
The Chronology of The Wheel of Time - Great site for keeping track of the WoT chronological timeline
Wheel of Time Character Archive - Wonderful reference to every character ever mentioned in the WoT books
WOTMania - Very Large WoT Community, hosts a great number of theory discussions