Apps with 'Duplicate image finder' feature
Professional digital photo management software to organize, tag, compare and process photo collections.
gThumb is an image viewer and browser for the GNOME Desktop. Features Image Viewer
A personal booru-style media tagger that can import files and tags from your hard drive and popular websites. Content can be shared with other users via user-run servers.
PhotoSweeper helps photographers get rid of tones similar photos on OS X.PhotoSweeper lets you:
This app allows users to scan their computer for similar and duplicate images. Once the scan is over, the user can either delete the detected files or back them up to a separate folder.
Quickly find same or similar pictures/photos including rotated (mirrored) or negative images - duplicates based on content similarity signature.