Looking for a software that will scan a folder (and all its sub-folders tree) and will output Folders that have a lot of files in common.


You can simply write a basic script (maybe in PowerShell) that recursively interates into two folders retrieving, for example, filenames, sizes, dates and other attributes. Save such info into a couple of hash tables and diff them with some criteria. Et voilà.

  • It'll take the script a very very long time to do so - I need it to search thousands of folders. It has to be quit sophisticated
    – WillyCode
    Jul 18 at 16:30

You can use Fast Duplicate File Finder to accomplish this if you are looking for duplicate files or duplicate files with different names in multiple directories or the same directory. Files that are similar or a duplicate with a different name will be grouped together with the folders the files are in.

From Widipedia, "Fast Duplicate File Finder is a Windows tool developed by MindGems Inc, available as a freeware version and a full commercial version. It is intended to scan a user's computer for duplicate files, display a list of such files and let the user delete unneeded copies with the purpose of freeing up hard drive space."


  • A link to the application would improve this answer.
    – Eric S
    Jun 10 at 12:49

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