John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads

Dope Wallpapers HD - Dope Wallpapers HD is an amazing mobile app having a variety of wallpapers and backgrounds for mobile phones.

Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.

AmoledPix - AmoledPix is one of the best apps that provide high-quality Amoled wallpapers with Amoled display.

Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.

Vellum Wallpapers - Vellum Wallpapers is one of the best apps that provides a wide variety of HD Backgrounds and Wallpapers for lockscreens.