Duper Finds Identical Files On Your Mac for Free
If you’re looking for an absolutely free OS X utility for finding duplicate files that doesn’t require you to pay a fee after the trial period is up, you should try Duper.
This is a totally free open source tool that can be downloaded from the developer’s website at dll.nu/duper. Once installed, the utility can be instructed to scan specific folders using the Add folder button (anything added in error can be dropped using Remove folder(s)), and using the Exclude patterns… button you can make use of regular expressions to skip any data that you don’t want included in the scan.
You can also specify a Minimum file size as well as toggle various caching options, and the scan is started with the Start scan! button. You can check which files are being checked in the scan window as the utility proceeds through the assigned directories.
Results are displayed in the lower portion of the window, where you can check files (either individually or in bulk using the drop down menu) and mark them for deletion if necessary.
As you can see, Duper is a very useful tool, and while it doesn’t offer the same flexible options as Araxis, it’s free, and does the basic duplication scan and check.
In addition to the Mac version, a free Windows and Linux Java version is available on the product’s homepage at dll.nu/duper, making this a great choice for uncovering duplicates on all operating systems!
Screenshot provided by author.