Ebooks are available in many different formats, including the widely supported ePub standard. You can read ePub ebooks on Apple iPad, Barnes & Noble Nook, Sony Reader, and Kobo eReader models; ...

The open-source EPUB e-book format is great for sharing books between different readers and making life easier on readers generally--but Amazon's Kindle, the big player, doesn't support it.

There are millions of free books out there on the internet, many of them stored in the PDF format. But reading PDFs on a Kindle ebook reader is a dismal reading experience. There is, however, a quick, ...