Windows 7 only: 7LogonChanger browses and sets selected Flickr and Picasa photos as your wallpaper or Windows 7 login screen easily.
You can change the Windows 7 login screen with a custom image from your computer, but 7LogonChanger tag searches and browses photo services Flickr and Picasa for wallpapers and customizable login screens. If you're in the habit of searching online for images to customise your computer, 7LogonChanger makes it a breeze.
Right-clicking on an image brings up both options, and the program makes it easy to return to your default login screen. Unfortunately, it lacks the option to browse images from your own computer like Logon Changer. 7LogonChanger is a free download for Windows 7 only.