The Cat's Pajamas
- Offers new and used homeschool materials. Searchable by grade or language.
- Sells college and school textbooks.
- Textbooks, study aids, dictionaries, encyclopedias, thesauruses, reference materials, classic literature, and bestselling novels for K-12 and college.
Textbook Exchange Canada
- Buy and sell used textbooks in Canada.
The Book Cellar
- Specializing in college-level technical books and Christian homeschooling curriculum.
College Book Service
- Offering used textbooks, manuals, discount college as well as university books.
Academic Book Trade
- Buy and sell second hand academic and university books.
- Book exchange for US and Canadian college students. Registration required.
- Buy and sell college textbooks as well as compare prices at online bookstores.
Textbooks For Sale
- A selection of used college textbooks.
- College textbooks exchange; student to student sales.
Academic Book Services, Inc.
- Grades K-12 reconditioned used textbooks, reference materials, workbooks and paperback titles.
- Free listings for college textbooks. Search by schools.
- Used, and some new college textbooks. Buyback service based at East Greenbush, New York.
- Buys and sells used textbooks; registration required to enter.
Texas Book Company.
- Sells new and used college textbooks. Includes lists of books by institution.
Follett Educational Services
- Used textbooks for grades K-12.
- Carries an extensive collection of rare out of print used textbooks, reference materials, and technical titles.
Free Book Express
- Textbooks and novels, with a 12 site price comparison feature.