Calibre is a free and open source e-book library management application, developed by users of e-books for users of e-books.
Features: A single entry in your library may correspond to actual e-book files in several formats * Calibre can sort the books by: Title, Author, Date added, Date published, Size, Rating, Series, etc. * It supports extra searchable metadata: Tags: A flexible system for categorizing your collection however you like – Comments: A long form entry that you can use for book description, notes, reviews, etc. * Searching any and all of the fields mentioned above. You can construct advanced search queries * Export arbitrary subsets of your collection to your hard disk arranged in a fully customizable folder structure. * Find book metadata online based on existing title/author or ISBN information – download various types of metadata and covers for your books, automatically. The metadata system is written using plugins so that different types of metadata sources can be supported in the future.
Calibre can convert between a large number of formats. The conversion engine 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. It can insert the book metadata into a “Book Jacket” at the start of the book.
Calibre has also a modular device driver design that makes adding support for different e-reader devices easy. Syncing supports updating metadata on the device from metadata in the library and creation of collections on the device based on the tags defined in the library. 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.
Calibre can automatically fetch news from websites or RSS feeds, format the news into a ebook and upload to a connected device. The ebooks include the full versions of the articles, not just the summaries.