Unsplash Wallpaper - Gorgeous wallpapers on your Mac
Splashify - Beautiful desktop wallpapers for Mac and Windows
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android
Wallcat - Enjoy a new, beautiful wallpaper, every day.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Walllpaper - Turn Dribbble shots into backgrounds for every iOS device