WallpapersEveryday - Gorgeous wallpapers on your desktop in just one click or auto-delivered at chosen time intervals.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
FCorp My Desktop - "ALL-IN-ONE" Desktop Related Tools.
Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
CommandLine Wallpaper Changer - Change Wallpaper From little Command Line Application