Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.
WallpapersEveryday - Gorgeous wallpapers on your desktop in just one click or auto-delivered at chosen time intervals.
Fondo - Find the most beautiful wallpapers from Unsplash.com
Adolix Wallpaper Changer - Adolix Wallpaper Changer- free wallpaper changer software.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
MuralPix Wallpaper Changer - MuralPix Wallpaper Changer and Screen Saver