Komorebi - Komorebi is a wallpaper manager in Linux that uses the GTK+ and Vala libraries to support animated...
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.
Walyk Wallpaper Changer - Walyk Wallpaper Changer allow you to change your wallpapers automatically or manually.
WallpapersEveryday - Gorgeous wallpapers on your desktop in just one click or auto-delivered at chosen time intervals.