<
http://calibre.kovidgoyal.net/>
calibre is a one stop solution to all your e-book needs. It is free,
open source and cross-platform in design and works well on Linux, OS X
and Windows. calibre is meant to be a complete e-library solution and
thus includes library management, format conversion, news feeds to ebook
conversion, as well as e-book reader sync features and an integrated
e-book viewer.
--
http://www.gutenberg.net - Fine literature digitally re-published
http://www.plos.org - Public Library of Science
http://www.creativecommons.org - Flexible copyright for creative work