NeeView - Display two images simultaneously
FlippingBook - FlippingBook changes the way you present your documents
Soda PDF 3D Reader - Read any PDF document like a book using our patent pending 3D technology!
Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
ComiXed - ComiXed seeks to be the ultimate digital comic book management system.
Flipsnack - Flipsnack | PDF to HTML5 flipbooks