Cross-platform (Linux, MacOS), supports multiple world languages,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.
License: GPL v2
Status: Not Portable:
* Writes thumbs/files to: User\AppData\Local\BeCrux\Wally\
In testing it was a very cool program. Very impressive and came up with some good selections.