With CoolCollage you can generate impressive compositions of your photos. The end result is a big picture with all your personal photos mixed up seamlessly in a visually stunning way! CoolCollage creates collages automatically, and can be used for any creative / graphic art purposes, like albums, prints, social network images, websites etc. Another feature is support for automatic desktop wallpaper changing using your collages and a screen saver.
License: Free to try, $15 to buy