John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Open Camera - Open Camera is an open-source camera app for Android phones and tablets.
Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.
Camera FV-5 - Camera FV-5 is a professional camera application for mobile devices, that puts DSLR-like manual...
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
AiryCam - Look good in every photo