I found a really cool app in the App Store called FileSorter
It automatically sort files. Is there any FREE alternative?
I've found this site a little while ago that let's me see if there are alternatives to apps either because they're on Windows (and the app's not important enough to boot Parallels) or too expensive: alternativeto.net
Give that a try and see what you can find. Specifically for you, this is what I found there.