Techarticles.Me – Calibre is a cross-platform and free e-book management app for Windows, OS X and Linux.
The Calibre Program synchronizes ebooks across multiple devices and readers. The software can convert to formats: MOBI, EPUB, HTML, TXT, PDB, PDF, AZW3, RB, RTF etc., edit the metadata in the file and retrieve relevant information about the books from the Internet. In addition, it can be used as an e-book reader, as well as tools to manage and sort your own libraries.
Calibre allows you to be able to analyze document structures and divide them into chapters and create a table of contents. Through this application you can search files in folders or zip, RAR files and even download books from Amazon, SONY Reader, online store Empik etc.