Links

The basics

National SCRABBLE® Association (NSA)
Greenport, NY-based liaison between Hasbro and club and tournament players.
Official Tournament Rules
NSA's Official Tournament Rules.
Hasbro SCRABBLE®
The corporate owners of the SCRABBLE® trademark in North America.
Mattel SCRABBLE®
Corporate owners of the SCRABBLE® trademark just about everywhere except in the United States and Canada.
Cross-Tables.com
The best source of information on tournaments past and present. Copious statistics, player profiles, and more.
Steven Alexander's SCRABBLE® FAQ
A compendium of questions and answers about the game and its history.

Internet SCRABBLE® Club (ISC)
This site, based in Romania, is a popular site for tournament players from all over the world.
Scrabulous.com
The site is less popular with "serious" SCRABBLE® players, but does attract some tournament players.
Jumbletime
An anagramming game and study site that is very popular with club and tournament players.

Crossword Games Pro (CGP)
The most popular mailing list for North American tournament players. Ostensive focus is on discussion of game strategy. Bickering is endemic.
OPSD Mailing List [link is unknown]
This list for North American players eschews discussion of SOWPODS and is more social and "chatty" in nature than CGP.

Quackle
Brilliant crossword game analysis and artificial intelligence tool. This open-source software Runs on Linux, Unix-like, Mac OS X, and a mass-market operating system well known for its instability, monopolistic practices, security vulnerabilities, and "the blue screen of death."
Zyzzyva
Another excellent open source program that has become indispensable to word game players.
LeXpert [link is unknown]
Word study and anagramming software for Microsoft operating systems, including CE (for hand-helds).
LAMPWords
Word lookup and anagramming program for the Palm OS.
Spotted
TWL98 dictionary with definitions for Palm OS.