Goodreads - See what your friends are reading.
LibraryThing - A home for your books.
Riffle - Just good books and the readers who love them.
Libib.com - Our library management app caters exclusively to home and private libraries.
BookBuddy - Kimico is a software development company focused on bringing you Essential iPhone and iPad apps designed to keep you organized.
BookLikes - BookLikes is a free blog platform for book lovers. 100% independent and free.