Autopsy - The Sleuth Kit - Autopsy is an open source graphical interface to The Sleuth Kit and other digital forensics tools.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Encase eDiscovery - EnCase eDiscovery helps litigation experts to establish best practices throughout the e-discovery workflow.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Forensic Toolkit FTK - Digital Investigations
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.