Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.
Splashify - Beautiful desktop wallpapers for Mac and Windows
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android
Wallcat - Enjoy a new, beautiful wallpaper, every day.
Walllpaper - Turn Dribbble shots into backgrounds for every iOS device