On their site, Calibre states that their product is a one stop solution to all of your e-book needs. I have used Calibre to convert my books and PDF files for use on my iTouch and iPad. I like their product. It is a free open-source program that is used in over 160 countries.
You can download it for Windows, OS X or Linux by clicking here.
I like that they have some easy tutorials that can show you how to convert your files.
Features of their program include:
- Library Management
- e-Book conversion
- Synching e-Books to Reader Devices
- Downloading News from the Web and Converting to e-Book Format
- Comprehensive e-Book Viewer
- Content Server for Online Access to Your Book Collection