What are some alternatives?
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...
Blurb - Create and self-publish books, magazines & ebooks
FBReader - FBReader is an e-book reader for various platforms. Features:
CreateSpace - Publish your words, your way
calibre - Ebook manager, viewer & converter
Issuu - Issuu is the leading digital publishing platform delivering exceptional reading experiences of magazines, catalogs, and newspapers.