Pixiple - Find images similar in pixel and/or metadata content
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
Awesome Duplicate Photo Finder - Awesome Duplicate Photo Finder is a free powerful tool, that helps you to find and remove duplicate...
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
VisiPics - VisiPics does more than just look for identical files, it goes beyond checksums to look for similar...
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.