calibre is a free and open source e-book library management application developed by users of e-books for users of e-books. It has a cornucopia of features including:

Library Management for e-book collection by: Title, Author, Date added, Date published, Size, Rating, Series, etc. even go out onto the internet to find book metadata based on existing title/author or ISBN information.

E-book conversion to convert a huge number of formats. It can rescale all font sizes, ensuring the output e-book is readable no matter what font sizes the input document uses. It can automatically detect/create book structure, like chapters and Table of Contents.

Syncing to e-book reader devices. If a book has more than one format available, calibre automatically chooses the best format when uploading to the device. If none of the formats is suitable, calibre will automatically convert the e-book to a format suitable for the device before sending it.

Downloading news from the web and converting it into e-book form. Calibre can automatically fetch news from websites or RSS feeds, format the news into a ebook and upload to a connected device.

Comprehensive e-book viewer. Calibre has a built-in ebook viewer that can display all the major ebook formats. It has full support for Table of Contents, bookmarks, CSS, a reference mode, printing, searching, copying, customizing the rendering via a user style sheet, embedded fonts, etc.

Click here to download Calibre

Website: www.calibre-ebook.com