Flip HTML5 - FLIP HTML5 is a Interactive html5 digital publishing platform that makes it easy to create interactive digital publications, including magazines, catalogs, newspapers, books, and more online.
calibre - Ebook manager, viewer & converter
FlippingBook - FlippingBook changes the way you present your documents
FBReader - FBReader is an e-book reader for various platforms. Features:
Flipsnack - Flipsnack | PDF to HTML5 flipbooks
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.