FlippingBook - FlippingBook changes the way you present your documents
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
Anchor CMS - Free and lightweight blogging system
Flipsnack - Flipsnack | PDF to HTML5 flipbooks
Textpattern - Textpattern is an elegant content management system that is free, open source software.