Sigil - Sigil is a multi-platform WYSIWYG ebook editor. It is designed to edit books in ePub format.
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.
Jutoh - Epub editor, convertor and creator software for Mac and PC.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
calibre - Ebook manager, viewer & converter
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...