If you want to get rid of duplicate files on your PC, you can choose from many programs. A relative newcomer to the wide range is the aptly named Duplicate File Finder. Finding identical files can be done in many ways. The fastest is by comparing name and size, but that method is very superficial. The most thorough way is to view the content by calculating a check digit (called MD5 hash). This also allows you to find files with different names but with the same content. This is the way Duplicate works and it obviously requires more patience.
Duplicate File Finder you can here to download.
Click the link above to download for free Duplicate File Finder – Looking for Duplicates