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!!
WallpapersEveryday - Gorgeous wallpapers on your desktop in just one click or auto-delivered at chosen time intervals.
Artpip - Artistic wallpaper for your desktop, refreshed daily.
Adolix Wallpaper Changer - Adolix Wallpaper Changer- free wallpaper changer software.
AutoWallpaper - Using AutoWallpaper:
BioniX Desktop Wallpaper Changer - Free desktop wallpaper picture changer/desktop wallpaper manager software.