Literal - Track your reading and discover your next favourite book
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
12min - Your free habit builder for reading
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes
POLAR - A powerful document manager for Mac, Windows, and Linux for managing web content, books, and notes and supports tagging, annotation, highlighting and keeps track of your reading progress.
Goodreads - See what your friends are reading.