Useful as far as it goes...

Good app. Saves a ton of work. Easy to use. However when used on large collections of files (100K+) the app crashes. Just a guess that there is some built-in assumption about how many files can be scanned and processed. No app running on a 64-bit virtual memory machine should worry about allocating the memory needed to process long lists. At the least the app should detect when the processing requirements exceed the developer’s assumptions and exit gracefully. Or it could just be a bug. Five stars if this problem is resolved.

grw6242 about Duplicate Detective: Cleaner