CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Diskdeleter - Diskdeleter is data removal software that helps protect your privacy by securely deleting data from your hard drive.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
east-tec Eraser - Protect your sensitive data and privacy, and securely erase all evidence of your Internet and PC...
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
Wiperapp - Software build to meet all needs of companies dealing with erasing data on daily basis.