Bookicious - Find the best new book to read with books collections for makers, founders and entrepreneurs.
Bookcelerator - A curated directory of books that will make you smarter
Booknshelf - Social book and bookshelf discovery platform.
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes
Goodreads - See what your friends are reading.
Highly Reco - Book recommendations by awesome people