NeeView - Display two images simultaneously
calibre - Ebook manager, viewer & converter
Soda PDF 3D Reader - Read any PDF document like a book using our patent pending 3D technology!
FBReader - FBReader is an e-book reader for various platforms. Features:
ACBF Viewer - Comic book reader.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.