calibre - Ebook manager, viewer & converter
NeeView - Display two images simultaneously
Icecream Ebook Reader - Ebook Reader by Icecream Apps allows to read ebooks in several formats (EPUB, MOBI, FB2 and others). Download EPUB Reader for Windows.
Soda PDF 3D Reader - Read any PDF document like a book using our patent pending 3D technology!
Adobe Digital Editions - ebook reader software
ComiXed - ComiXed seeks to be the ultimate digital comic book management system.