CSS Profile - http://www.collegeboard.com
Online financial aid form required by many selective colleges.

FAFSA Online - http://www.fafsa.ed.gov
United States Department of Education site with online FAFSA application.

FAFSA4caster – www.FederalStudentAid.ed.gov
Electronic Financial Aid program designed to help students and their families obtain early estimates of their eligibility for federal student financial aid.

FastWeb - http://www.fastweb.com
Comprehensive scholarship search site on the web. You do have to register, but it's free.

FinAid - http://www.finaid.org
Information on many aspects of financial aid. Loans, grants, estimators, etc. 

Making It Count - www.elearning.makingitcount.com  Making College Financial Planning Count online tool. This free resource provides a comprehensive, interactive overview of the entire college financing process.