Crosswords Arena - Word game, multiplayer and computer players
LetsDraw.It - Guess and Draw, Drawing Battle, Pictionary, Copy picture - online drawing games where you can compare your skill with others.
Lexica - An open source word-search game.
Drawasaurus - Drawasaurus is an online drawing & guessing game you can play with friends or strangers.
Word Domination - Word Domination is a fast paced and addictive real-time word game.
SketchParty TV - SketchParty TV is a high-tech drawing game that plays a bit like Pictionary.