Avast Cleanup - Next generation tuneup and cleanup for your PC

Diskdeleter - Diskdeleter is data removal software that helps protect your privacy by securely deleting data from your hard drive.

CleanMyMac X - Clean, protect and speed up your Mac

CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.

WinExt Free - Powerful Win utilities: fix registry issues, clean system junk, protect privacy, optimize system, find duplicates, show larger resources, see more info of recently accessed resources, monitor activity, make batch operations, synchronize resources.

Blancco Drive Eraser - Hard Drive Erasure Software