Calibre program is for managing your e-book collection. It acts as an e-library and also allows for format conversion, news feeds to e-book conversion, as well as e-book reader sync features and an integrated e-book viewer.
Calibre's features include: library management; format conversion (all major ebook formats); syncing to e-book reader devices; fetching news from the Web and converting it into ebook form; viewing many different e-book formats, giving you access to your book collection over the internet using just a browser.
What's new in this version:
Version 0.8.35 fixed MOBI Output When converting a paragraph that contains only a non-breaking space into a line break, ignore paragraphs with height less than 2pt.