DUFF is (will be) a tool for Windows used to find and process duplicate files on a computer file system and/or network.
It will have numerous built-in and plugin-based file comparison layers, duplicate markers, and fileset processers.
No documentation at all. Several unclear pages with partly dimmed settings for search criterias. This is not all, not in any way intuitive user interface, very confusing. I did not dare this to DELETE any duplicates it found. Application crashed three times when closing on Win-XP machine.