Fences - Keep your desktop organized with Fences. This is a simple software program that allows you to sort the tabs on your desktop and create files that are easily recognizable to you.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Nimi Places - Nimi Places is a Windows desktop organizer that gives you the ability to put files and folders into customizable containers. The elements in the containers are represented as icons or thumbnails. Read more about Nimi Places.
Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.
iCollections - Organize your Mac desktop items.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.