http://www.collegeboard.com/testing/

The headquarters of college board testing.

http://www.freesat1prep.com/

Free resource of SAT preparation tips and advice.

www.takesat.com/index.php

Easy access to free study materials, practice tests, 10 week study plan, 1000 essential SAT word list.

www.freevocabulary.com

Downloadable PDF lists 500 collegiate words with brief definitions.

www.powerprep.com/satlabs.htm

Free diagnostic test, SAT strategies, etc. Also sells sofiware.

www.number2.com

“Absolutely free test prep.”

www.princetonreview.com

SAT prep, 700+ online school applications, etc.

www.kaptest.com

Free practice tests as well as information about Kaplan services (classes, software, etc.).