Readernaut - We are a small community of readers, sharing our adventures and supporting each other as we persue a life of learning.
Literal - Track your reading and discover your next favourite book
LibraryThing - A home for your books.
Readup - Track and improve your online reading habits.
Goodreads - See what your friends are reading.
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.