CleanMyMac X - Clean, protect and speed up your Mac
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
MacKeeper - The new MacKeeper app delivers multilayered protection from malware, online threats, and identity theft & Mac performance optimization. Learn what is MacKeeper.
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
MacCleaner Pro - MacCleaner Pro is a bundle of 6 apps to clean up disk space and speed up Mac.
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.