Calibre is a free and open source e-book library management application made by users, for users. Many languages, designed around the concept of the logical book, i.e., a single entry in your library that may correspond to actual e-book files in several formats. Calibre can sort the books in your library by title, author, date added, date published, size, rating, or series, along with extra metadata such as tags and personal comments.
- Calibre is the no 1 reader. It also allows you to convert from one format to others