Easy Poster Printer - Ever wanted to create your own poster?
Sigil - Sigil is a multi-platform WYSIWYG ebook editor. It is designed to edit books in ePub format.
Rasterbator - Wall art from any image
Jutoh - Epub editor, convertor and creator software for Mac and PC.
Block Posters - A free poster maker to create massive wall posters from your own images! Free!
calibre - Ebook manager, viewer & converter