A searchable database of rare and collectable works of literature, history, science, music, and many others. Includes publication information, photos, and information for collectors.

Catalog books online and share the list. Also offering ratings, tags, zeitgeist listings, a virtual shelf, and related books.

Site for rare book collectors. Features articles about old books, worldwide book auction listings, online bibliographical database. Focus on out of print and antique books in Americana.

Offers a book search, information on pseudonyms, books by type, and links to booksellers.