Cisdem Duplicate Finder 6.1.0 -

Features improved algorithms for faster scanning and processing of large photo libraries, including Photos (iPhoto) and Music (iTunes).

The 6.x updates, including 6.1.0 and later 6.5.0, refined similar image algorithms, improved duplicate photo detection on newer macOS versions (like Catalina), and addressed minor bugs. Cisdem Duplicate Finder 6.1.0

Identifies visually similar photos (e.g., burst shots, slightly edited images) and allows adjustment of similarity thresholds. including 6.1.0 and later 6.5.0