i-DeClone - AI-powered duplicate file search and clean-up. Find identical and similar photos, music, documents etc
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.
Rdfind - Rdfind is a program that finds duplicate files.
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
FSlint - FSlint is a utility to find and clean various forms of lint on a filesystem. I.E.