Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
AwesomeWallpaper - AwesomeWallpaper plays videos, shows images and system information on your desktop wallpaper
ScreenPlay - Open-source and cross-platform Wallpaper, Widgets and AppDrawer app.
Lively Wallpaper - What is it? Lively is a Free and Open-Source Software (FOSS) for animated desktop wallpapers.
BioniX Desktop Wallpaper Changer - Free desktop wallpaper picture changer/desktop wallpaper manager software.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.