Calibre is a free application to help you manage your e-book library. It includes an excellent e-book viewer, which allows you to read your books on your computer screen, but it can also connect to some of the most widely used standalone readers (Kindle, SONY Reader, Cybook Gen 3, and iPhone). It supports ePub, MOBI, or LRS e-books, but it can open any TXT, HTML, RTF, ODT, or PDF document and convert it into a standard e-book. As a library management application, Calibre allows you to add all the metadata you need to have your e-book collection perfectly organized. This metadata can be read directly from a book file when imported, or typed in by you yourself. Apart from the most obvious bibliographic data, you can also add an image of the cover, a synopsis, and associate any book to other copies in different formats. EPub, MOBI, and LRS books can be read using the program's versatile built-in viewer, while all other files formats will open in their associated or proprietary viewers (such as Acrobat Reader for PDFs).
- Excellent e-book viewer