FCorp My Desktop - "ALL-IN-ONE" Desktop Related Tools.
Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.
Lively Wallpaper - What is it? Lively is a Free and Open-Source Software (FOSS) for animated desktop wallpapers.
Becrux Wally - Wally is a Qt4 wallpaper changer, using multiple sources like files, folders, FTP remote folders, Flickr, Panoramio, Ipernity, Photobucket, Buzznet, Picasa, Smugmug, Google, Vladstudio and deviantART images. Now it's available in many languages!!
ScreenPlay - Open-source and cross-platform Wallpaper, Widgets and AppDrawer app.