iBooks Author - iBooks Author, free from the Mac App store, allows you to create beautiful Multi-Touch textbooks — and just about any other kind of book.
Blurb - Create and self-publish books, magazines & ebooks
kotobee - Kotobee is a universal eBook creating and publishing software for the authors, novelist, writers, etc.
CreateSpace - Publish your words, your way
SQRIBBLE - Creates AMAZING eBooks & Reports In 5 MINUTES Without Typing Any Words!
IngramSpark - IngramSpark is an Online publishing services provider platform that allows you to publish or print books that are in high quality, and its global distribution service enables you to post and share around the globe.