Literal - Track your reading and discover your next favourite book
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
Readup - Track and improve your online reading habits.
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes
Book Track - Avid readers know how difficult it can be to keep tabs on a growing book collection and that's where Book Track comes into its own by making it quicker and easier than ever to track your library and reading.
Goodreads - See what your friends are reading.