TCG Wizards

Dantooine Base - Star Wars Minis and TCG Data Core
PDF spoilers, news, and rules.
http://hardscribble.net/dantooine/index.htm

Independent Development Committee
Fan-developed expansions, promotional cards, tournament announcements, strategy articles, and rules support.
http://www.skywlkr.net/idc/

Rebelbasers
News, reviews, forums, worldwide member map, and an online deck builder with spoilers of every card.
http://www.rebelbasers.com

Star Wars TCG [www.wizards.com]
Includes a card demonstration, news, tournaments, links, product support, and strategy guides.
http://www.wizards.com/default.asp?x=swtcg

Star Wars: Trading Card Game
Downloadable deck managing program. Program includes a card editor, collection editor, and deck editor.
http://www.dlos.org/swtcg.aspx