Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.
Rasterbator - Wall art from any image
WLPPR - Beautiful mobile wallpapers made from satellite imagery
Posteriza - Use POSTERIZA to design your own big posters and signs from any digital photo with your home...
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Block Posters - A free poster maker to create massive wall posters from your own images! Free!