in-print books
- Compare prices for books from major online shops at DealTime, or AddALL, or BestBookBuys
- Barnes and Noble
- Amazon.com!
- Borders.com (now teamed with Amazon.com)
- WordsWorth Books run by independent booksellers
- All Direct Books
- MediaFinder
- BookWire
- RecordedBooks.com
- AcqWeb's Directory of Publishers " Vendors
out-of-print " rare books
- AddALL Used Books searches 16 bookseller search engines, including Abebooks, adlibris, Bibiliofind, Bibilion, Helf.com and Powells
- Abebooks (Advanced Book Exchange) searches 45 million books, maps, manuscripts, scores etc from over 10,000 booksellers
- Alibris searches 30 million books, maps, manuscripts, scores, etc from thousands of independent booksellers
- BookFinder Search over 15 million Out-of-Print and Used Books
- Bibliofind Booksearch: Old, Used, Rare Books
- AcqWeb's Out-of-Print, Rare & Antiquarian Agents
- Used Book Search search of thousands of booksellers via a small number of booklisting services,including Bibliofind, Alibris, Barnes & Noble, and more.