Directed toward middle school level. CollegeNet - This site also links directly to the home pages of many colleges and universities, organized by geographic region. Collegeview - You can do a college search here.
Search results offer links to college sites, where available.
Mostly schools in the Northeast. Search by field of study or state. In addition to colleges, you can also search for summer programs and study abroad programs. Planet Earth - This site links directly to the home pages of many colleges and universities, listed alphabetically. Web US Higher Education - National college websites listing.