CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
JpegDigger - JpegDigger is designed for recovering deleted photos from memory cards but it works on hard drives...
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
JPEG Recovery LAB - JPEG Recovery LAB is specialized software to recover lost digital photos and video from memory...
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
myPhoto Recovery - myPhoto Recovery is a utility for recovery of lost and deleted photos.