Worldwide Scrabble
Official site provides history, trivia, and strategy tips for this board game, plus product information and links to clubs and organizations.

Scrabble Information and Resources
Has many Scrabble-related links on it including online dictionaries and some variations of the game.

PersianCaesar.com
How to Have Fun with Scrabble. A post-colonial and postmodern analysis, by Julian Darius.

ScrabbleLinks.com
A comprehensive scrabble directory with rules, history, graphics, books, articles, software, quizzes, forums, playsites, leagues, and tournaments.

ScrabbleClub
Provides information about clubs, events, and resources for players.

SOWPODS
Includes word lists, software, publications, a list of tournaments, mailing lists, and information about playing online.

Steven Alexander's Scrabble FAQ
Includes information on activities, publications, play-by-mail games and variants.

Onwords Scrabble Magazine
Quarterly magazine for Scrabble enthusiasts, and contains annotated games, word lists, challenges, competitions, strategy articles, reviews and news.

Anagrammer.com
Find the words from a given set of letters (up to 16) and determines their Scrabble scores.

Scrabble Junction
Offers word study lists, links, and games.