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

Wallpaper background - Wallpaper background is another free to use mobile personalization application that lets you enjoy more than 10 million high-quality wallpapers, consists of multiple categories such as Nature, Movies, Places, Flavors, and Games etc.

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

CocoPPa - CocoPPa – Icons and Wallpapers is an excellent mobile application that offers more than 1.

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

Zedge - Huge selection of free ringtones, themes, wallpapers and games for mobile phones. 6.