EBooks
From Freephile Wiki
Calibre is free software (licensed under the GPL v3) used by millions of people that allows you to download/manage/read/edit electronic books on the device of your choice, and is available for Linux, OS X, Windows and portable devices. The project also lists a large number of books that are free from Digital Restrictions Management (DRM) software. See http://drmfree.calibre-ebook.com/by/genre