BigDoggy's Scrabble Strategy Hints
Provides articles on becoming a better player.
Eric Harshbarger's Scrabble Challenges
Provides Scrabble challenges for advanced players.
Hasbro Scrabble
Includes an anagram builder, a dictionary, and links to various Scrabble related sites.
Mattel Scrabble
Three Shockwave games: Scrabble Hangman, Scrabble Invaders and Scrabble Snake.
The Scrabble Rack
Offers wordlists for two and three letter words, a word finder and a word checker.