AbeBooks is an online marketplace, a subsidiary of Amazon, that specializes in buying and selling used, rare, and out-of-print books, as well as fine art and collectibles. It connects buyers with sellers from around the world, offering a vast selection of items through independent bookstores, professional merchants, and private collectors. AbeBooks focuses on providing a platform for a diverse range of literary works and collectibles, including first editions, signed copies, and other items of interest to book lovers and collectors.