A new cross-platform app by Teorex, DupHunter (http://www.duphunter.com) scans photos on a user´s computer and gets rid of all duplicates leaving only the best images in each group of similar pictures.
The program automatically detects series of photos taken with continuous shooting or locates similar images based on their content. You set the program against folders on your computer, and it reveals all doubling images it finds. Then you select the best photos in each group of duplicates; DupHunter discards others.
DupHunter is available for Windows and MacOS. The price for a single license is $19.99.