Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Emby - media server for personal streaming movies tv music photos in mobile app or browser for all devices android iOS windows phone appletv androidtv smarttv and dlna.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.