Bookicious - Find the best new book to read with books collections for makers, founders and entrepreneurs.
calibre - Ebook manager, viewer & converter
Rocket Reads - A simpler alternative to Goodreads
FBReader - FBReader is an e-book reader for various platforms. Features:
LibraryThing - A home for your books.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.