DiskSorter - File Classification - Automatically Organizing Files on the Disk
GitHub - HaikuArchives/Filer: The Filer is a powerful, flexible automatic file organizer. It is an implementation of the Sorting Chute idea conceived on the Glass Elevator mailing list for Haiku.
Stationmate Wall File Organizer – Urban Wings 101
DropIt: Personal Assistant to Automatically Manage Your Files