Calibre Kindle Book Converter

Cِِalibre is the one-stop solution to all your e-book needs

Overview:

Calibre is a powerful and easy-to-use e-book manager. Users say it’s outstanding and a must-have. It’ll allow you to do nearly everything and it takes things a step beyond normal e-book software. It’s also completely free and open source and great for both casual users and computer experts.
Save time on managing your e-book collection
Use it everywhere and with anything
Comprehensive e-book viewer
Download news/magazines from the web
Share and backup your library easily
Edit the books in your collection
Satisfy every e-book need and get support