Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
calibre - Ebook manager, viewer & converter
Apple Books - The all-new Apple Books has been redesigned to make finding, reading, and listening to books a beautiful, effortless experience on iPhone and iPad.
Adobe Digital Editions - ebook reader software
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...
Bluefire - Bluefire Reader is your go-to reading application for ePub and PDF content, including ebooks from...