This site is supported by College Board and has a nice college component. You can filter schools based on size of school, 2/4 year, setting of school, etc. This is a comprehensive site that also includes information on financial aid, careers, tips on admission and visiting colleges.

Click on College Planning, then on Matching Assistant on the right-hand side. Despite its name, this site can match you with schools around the United States. The matching is quick and the information provided is a nice 'at a glance.'

This site focuses on 40 4-year colleges that champion the benefits of a liberal arts education, academic rigor, service, and meeting students where they are academically. This site has narrative descriptions of the schools, providing insights into student life, financial aid, campus life, etc.

I'm First was started in 2013 by the Center for Student Opportunity (CSO), which "is a national nonprofit based in Bethesda, Md. that works to empower first-generation college students on the path to and through college." According to the website, "I'm First! is an online community for first-generation college students—and their supporters. Hear inspiring stories and share your own, discover colleges that care about first-gen students, find answers to your questions about college, and receive guidance on the road to and through college."  There is a college match feature; several of the filters assist with searching for colleges that emphasize first-generation college bound students and allow students to search by retention rate.