dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
Avast Cleanup - Next generation tuneup and cleanup for your PC
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.
Advanced System Optemizer - Clean, optimize and personalize your PC