FlickrDown

FlickrDown requires .NET 2.0 framework so you know it’s for Windows. But it’s free. And it does exactly what you’d imagine it does. It downloads pictures from Flickr. The greatest thing about this is that now you can keep a backup of your memories on a harddrive, and also have them stored on Flickr. Grandparents don’t have your set of Christmas in July vacation photos? No problem. Just install and download away.
Via FlickrDown