Freeform
#Broken_Dagger, Arèthane, Bravhrt Castle, Druids Wolf Pack, Exodus Night, Forbidden City, Golantica, Imperia, Legend Weavers, MobiusRP.com
Non-Freeform
Chat Gaming Online, Club Insomnia, Keepers of Krivan Official Website. AD&D Secon, RPG Systems, Inc., ShadedRealm
Crossroads of Reverie
Gathering place to arrange IRC games, freeform or otherwise.
The Anime and Games RPG
Allows you to join as a Dragon Ball, Starcraft, Final Fantasy, or Sailor Moon member. IRC based.
The IRC Roleplaying Homepage
A directory of IRC roleplaying games in various different genres. Also, a player database, a chat room, and roleplaying tools.