DupHunter scans photos on a computer and gets rid of all duplicates leaving only the best images in each group of similar pictures.
Conveniently, the program automatically detects series of photos taken with continuous shooting or locates similar images based on their content.
DuplicateHunter is an app designed to quickly deal with all the photo duplicates. The tool implements a unique image analysis algorithm that not only detects similar images with high accuracy, but also does this extremely quickly.
Note: Currently available for $9.99.
Note: Now requires OS X 10.7 or later.