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.
FlippingBook - FlippingBook changes the way you present your documents
kotobee - Kotobee is a universal eBook creating and publishing software for the authors, novelist, writers, etc.
Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
SQRIBBLE - Creates AMAZING eBooks & Reports In 5 MINUTES Without Typing Any Words!
Flipsnack - Flipsnack | PDF to HTML5 flipbooks