Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Cool Reader - Fast and small cross-platform eBook reader for desktops and handheld devices
Project Gutenberg - Project Gutenberg offers free ebooks to download.
AlReader - Alreader.com - new perspective on reading e-books.
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.
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...