Duplicate Cleaner - Duplicate Cleaner: the fastest and most popular tool for finding duplicate files. Over 1 million downloads: Get your copy now! Free and Pro versions available.
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
File Juggler - File Juggler is a Windows utility for automatic file management.
Duplicate Media Finder - Duplicate Media Finder locates and deletes identical files and similar media
DeDuplicate - If your cloud space has many files, maybe because of some automatic backup feature, it's easy to flood it with multiple copies of the same stuff!This app scans your cloud, searching for identical files.