Top: Kids and Teens: Games: Board Games: Scrabble (4)
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Hasbro Scrabble - Includes an anagram builder, a dictionary, and links to various Scrabble related sites.

Eric Harshbarger's Scrabble Challenges - Provides Scrabble challenges for advanced players.

Mattel Scrabble - Three Schockwave scrabble 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.