Calibre

Calibre is the powerful, all-in-one ebook manager that does it all. It is completely free and open source, making it a must-have for both casual readers and tech experts. Effortlessly organize your entire library, convert between formats for any device, and download news or magazines directly from the web. With its comprehensive viewer and built-in editor, Calibre satisfies every ebook need, allowing you to easily edit, share, and backup your collection. It’s the outstanding software that takes ebook management a step beyond the ordinary, saving you time and giving you total control.