JpegDigger - JpegDigger is designed for recovering deleted photos from memory cards but it works on hard drives...
AnyFound Photo Recovery - Download AnyFound Photo Recovery Free Edition - An application that can recover deleted, lost and corrupted photos free.
myPhoto Recovery - myPhoto Recovery is a utility for recovery of lost and deleted photos.
Disk Doctors Photo Recovery - Disk Doctors Photo Recovery is viewed in the very top most echelon of rescue computer software.
Recuva - Accidentally deleted an important file? Lost files after a computer crash?
File Scavenger - File Scavenger is a file "undelete" and data recovery utility for Windows.