csBooks is described as 'smart solution to manage all your PDF, EPUB and MOBI files. csBooks will generates thumbnails and keeps the read status of your books. It also has filter and sorting functinality with beautiful interface' and is an app in the News & Books category. There are more than 10 alternatives to csBooks for a variety of platforms, including Android, Windows, Android Tablet, Mac and iPhone. The best alternative is calibre, which is both free and Open Source. Other great apps like csBooks are Amazon Kindle (Free), Google Play Books (Freemium), Cool Reader (Free, Open Source) and Delicious Library (Paid).
Calibre is a free and open source e-book library management application made by users, for users. Many languages, designed around the concept of the logical book, i.e., a single entry in your library that may correspond to actual e-book files in several formats.
Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and Android-based device. You can discover and read over 630,000 books in the Kindle Store, including the latest bestsellers and new releases.
Google Play Books lets you search, preview, and buy millions of books using Google Book Search. Books in the public domain and certain copyrighted books can be read and downloaded in their entirety for free.
Catalog your books, movies, music, software, toys, tools, electronics, & video games in a nice interface. Import all your stuff onto your digital shelves using your Mac’s iSight webcam, our wireless barcode scanner, or your keyboard.