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!!
PingPoint - Never miss a Mark Zuckerberg signup to your app ever again
DesktopSlides - DesktopSlides is a light and user friendly desktop wallpaper changer for windows.
ReIcon - ReIcon is portable freeware that enables you to save and restore your desktop layout.
Random BackGround - Random BackGround desktop wallpaper slideshow with advanced features for Windows
AeroWallpaperChanger - AeroWallpaperChanger is another "wallpaper changer" software for Windows 7.