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Gunamoi Software

   ListDuplicates - a free GUI tool to search for duplicate files

ListDuplicates Program


A free GUI tool to search for, and list, duplicate files.  This is free software and is provided free of charge, 'as is' with no warranty.  No registration required. 

ListDuplicates searches for and identifies any duplicated files in the specified folder and subfolders.  The program ignores file names and dates.  The first pass compares file sizes, and any files with a unique size are pruned from the list.  The second pass compares file checksums (SHA256 hash), and again prunes any unique files from the list.  The final list of duplicate files may be output in a choice of formats, including: comma separated (CSV) for manipulation in a spreadsheet; simple text file (TXT) for easy manipulation in a word processor; or formatted HTML or PDF files (just because I could). 

Error messages may result if trying to search files in folders where you do not have access privileges.  In this case, try "Run as administrator" to minimise problems. 

ListDuplicates has limitations.  Only files with exactly identical contents are listed.  Even a single byte of a file changed will mean the file is not a duplicate.  For example, two images may appear identical to a human, but if the image files are not identical, say if exif tags have been removed from one, or if one has been re-saved in a slightly different format, they will not be listed as duplicates.  Or if you open a document in Microsoft Word, or OpenOffice, etc, and save it to a new location without editing, the contents will still be slightly changed and the files will not be identified as duplicates.

System Requirements:

Windows 32bit: Windows XP or later.
Windows 64bit: Windows 7 or later.

This is free software and is provided free of charge, 'as is' with no warranty.  No registration required. 

Download the program here.

  DOWNLOAD ListDuplicates 1.2 (Windows 32 bit) (1.93MB) 

  SHA1 checksum: 4b7af1a7a7ca974fb1053df55ab0be263293b211

  DOWNLOAD ListDuplicates 1.2 (Windows 64 bit) (2.22MB) 

  SHA1 checksum: 31df1de5c7c5d79283eedb66998beda2b7d311ed

Sample ListDuplicates Screenshot

Sample Screenshot

Please note that the exact look and feel of the program will vary on each computer depending upon the individual user's operating system and theme settings. 

Version History

Version 1.0 released August 2020.

Version 1.1 released December 2020:

  • Minor update of code libraries.
  • Fixed bug where file or folder names containing '&' were not included in HTML or PDF output files.
  • Improved progress display.

Version 1.2 released April 2021:

  • Minor update of code libraries.
  • Add option to Keep All instead of just overwrite duplicate output file names.

This is absolutely free software, provided ad-free and without obligations.
However, should you find it useful, and wish to show your appreciation, you may buy me a coffee via PayPal using the button below: