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What is the Best Duplicate File Finder Mac 2017?

We have reviewed duplicate file finder Mac for 3 years. This year, we spent over 70 hours testing and reviewing, and we considered 10 products. After evaluating, we've chose Cisdem DuplicateFinder for Mac ($29.99 Life time license) as our top pick. It offered an array of features that simplify the way to find and remove duplicate files on Mac, and was the only solution we reviewed that finds true duplicate files regardless of file name.

Best Duplicate File Finder for Mac Summary

  Cisdem DuplicateFinder Gemini 2 dupeGuru Duplicate Detective EASY DUPLICATE FINDER
Supported OS OS X 10.8+ OS X 10.10+ OS X 10.8+ OS X 10.7+ OS X 10.6+
Speed Very Fast Fast Fast Very Fast Slow
Ease of Use Easy  Easy  Old-fashion interface Easy  Old-fashion interface
Scan Apps(iTunes/iPhoto/Photos) Add app directly Add app directly
, but can't really clean duplicates in Photos

Add app directly

No No
Scan filter Yes  Can't filter to scan a specified file Yes Can't filter to scan a specified file Yes
Preview Files Yes  Yes  No Yes  Yes 
Auto-select  Yes  Yes  Yes  Yes  Yes 
Results Can find duplicate files with the same name and duplicates with the same content Can find duplicate files with the same name and some duplicates with the same content Can find duplicate files with the same name, can't find  duplicates with the same content Can find duplicate files with the same name, can't find  duplicates with the same content Can find duplicate files with the same name, can't find  duplicates with the same content

Why Should I Choose a  Duplicate File Finder Mac?

Before you ask yourself what the best duplicate file finder Mac is, you should wonder what it is and why you would need it. Duplicate files are usually useless and keeping them on your Mac is a waste of valuable hard disk space.Your hard drives may be full of duplicate documents, songs, photos, and videos. How to find and remove duplicate files? Yes, you need a Mac duplicate file finder which can help you locate and remove useless duplicate files to free up disk space and better organize your file collections. The relative benefits of using a Mac duplicate file finder for only reducing your digital junk levels are trivial. The benefits should come from added functionality and security.

General benefits of the best duplicate file finder Mac:

  • Find and remove duplicate files
  • Identify and recover wasted disk space
  • Reducing the time and media used for backups
  • Minimize time used to unneeded virus scanning
  • Increase free space on "limited" resources
  • Reduce files searching time

How We Tested

To evaluate ease of use, interface and performance impact, we installed each Duplicate File Finder Mac on the same iMac with Retina Display running macOS Sierra 10.12. It was powered by a 3.1 GHz Intel Core i5 Quad-Core processor and had 8GB of RAM and 23GB of data stored.

5 Duplicate File Finder Mac programs – DuplicateFinder, Gemini 2, dupeGuru, Duplicate Detective, and EASY DUPLICATE FINDER – rose above the rest in our best duplicate file finder review because of their ability to thoroughly scan and remove duplicate files from hard drives and SSDs.

Why Cisdem DuplicateFinder for Mac is the Best Solution?

With so many software and freeware invented these days, you’ll have a hard time choosing for the right one. Some developers will present an online duplicate file finder or freeware, but the features are very limited.When it comes to best Mac duplicate file finder, I highly recommend Cisdem DuplicateFinder. Why Cisdem DuplicateFinder is the best solution? I will give you the reasons below.

Cisdem DuplicateFinder for Mac can help users to delete the same photos, documents, spreadsheets, MP3s, etc. in your hard drive. It use several file comparison methods, including MD5 checksum, comparison by name, date, size, and even byte-by-byte comparison (comparison by file content). These methods are very effective for finding duplicate files and the byte-by-byte algorithm guarantees 100% accuracy. Other sources and devices are also supported, including external devices, such as MP3 players, USB drives, Digital Cameras, etc. What's more this app supports find and remove duplicate files from iPhoto and iTunes.

Compared to other Mac duplicate file finder, Cisdem DuplicateFinder has many advantages:

  • User-friendly and fashion interface. All buttons are customized according to customers' demand.
  • Some duplicate file finders Mac don't support scanning duplicates in iTunes or iPhoto, but Cisdem DuplicateFinder can scanning apps directly. You don't need to worry about the duplicate files here.
  • Super fast speed, which will save your time.
  • Support deleting files to a specified folder.
  • You can stop the scanning process at any time, and it will show you the instant scanning results.
  • Supports finding and removing duplicate files from your HDD or SSD.
  • Shows duplicate files in both pie chart and categories. It also allows you to remove duplicates in your desired ways.

Surely, Cisdem DuplicateFinder also has its disadvantage, it is only available for Mac OS X 10.7 or later and needs 20 MB space. See our customer Sally's first impression on this duplicate finder below.

Download Cisdem Duplicate File Finder Mac >>

Use DuplicateFinder to Find and Delete Duplicate Files on Mac

Three Steps to find and delete these duplicates and regain the storage space they previously occupied:

  1. Drop the folder that you want to scan into the app. (You can filter scanning duplicates by clicking the gear like icon on the top right corner for advanced settings.)
  2. Once you have chosen the folder to scan, please click "Scan" to start the duplicate file scanning.
  3. When the scanning finished,the number and space of duplicate files will be presented in the app. Click "Show Results",all duplicate files of the chosen folder will be listed on a colorful pie chart which spots the most problematic file type. Click "All" on the menu bar and you can preview each duplicates by clicking it, and the detailed information will be listed on the right. Delete multiple duplicated files by selecting them first, and then clicking "Delete" on the lower right corner.

Download the freetrial of Cisdem Duplicate Finder Mac Now!

The Competitors of Cisdem DuplicateFinder for Mac

#2. Gemini 2

Gemini 2 is the duplicate finder from Macpaw. It has a beautiful interface and uses fast duplicate scanning algorithm to get useless files on your Mac computer. It lets you preview files before you remove them just like Cisdem DuplicateDinder and the new Gemini 2 adds support for finding similar images. But the function is rather limited and it can really find those similar images.

Pros: Great interface and easy to use, super fast speed.


  • The auto-select tool is a bit of a curse. If you don't pay great attention to it, you may accidentally delete an important file.
  • Do not have a filter option.
  • Updated Gemini 2 requires Mac OS X 10.10+.
  • Only delete the duplicate files of local folder, cannot delete the file at the Dropbox;
  • Though it supports adding iTunes and iPhoto to scan, but after deleting, the duplicates appears again.

Download Gemini 2>>

#3. dupeGuru

dupeGuru is a cross-platform application for find and manage duplicate files, it provides 3 scanning ways to find duplicate files, and users can choose to scan either filenames or contents. It will show the scanning results after the scan. Each file and its duplicates are listed in the interface with files highlighted. However, it can also require up to 3 separate downloads to check all your library, which is annoying.

Pros:3 scanning methods, flexible file deleting settings. Supports scanning app directly.


  • Though it says it’s free, but after deleting 10 duplicate files you are asked to buy it.
  • The interface is not modern fashioned, and it may be a little hard for some users.
  • You can’t stop at the scanning process.
  • Don’t support instant preview for duplicate files, you have to click to see the files.
  • Don’t support deleting files to a specified folder.
  • The Picture and Music modes are also fairly slow.

Download dupeGuru>>

#4. Duplicate Detective

Duplicate Detective is a simple app which clean duplicate files in a fast and easy way. It filters the files by size, name, date etc. and the user has the option of setting the minimum duplicate file size.

Pros: Its price is so cute, just need $4.99; Simple interface, Easy to use, fast speed.


  • Don’t support scanning app directly, that is if you want to remove duplicate from iTunes or Photos, you may need to manually locate the file folder you want to clean.
  • You can’t stop at the scanning process.
  • Don’t support deleting files to a specified folder.

Download Duplicate Detective >>


EASY DUPLICATE FINDER provides 11 modes of duplicate scanning, you can choose from file search/Email mode/Contacts Scan/Music Scan/iPhoto scan/iTunes Scan/Photos Scan/Google Drive/Folder Comparison/Dropbox Scan/Outlook Mail/Outlook Contacts, but the scanning process takes so much time, and the interface are buggy. The advanced features can be overwhelming to average user.

Pros: 11 duplicate scanning modes. Supports OS X 10.6+. Can save scanning results to txt/csv/html format.


  • Old fashioned interface, buggy.
  • A little bit expensive, $39.95 annually.
  • Though it provides iTunes/Photos/iPhoto scanning mode, it Don’t support scanning app directly.
  • You can’t stop at the scanning process.



Generally, a good duplicate file finder Mac can search for files with the same name, the same size, and/or the exact same contents. It helps you examine each file and decide which one to keep. It can offer flexible settings on certain file types, so you can concentrate on the more wasteful redundancy. Most of all, it should be easy to use and stable. Taken together, Cisdem DuplicateFinder is undoubtedly your best choice to find duplicate files on Mac.

Download the free trial of Cisdem Duplicate File Finder Mac Now!

2017-02-15 04:56:15 / Posted byRosa Reyes to Utility Follow @ Rosa

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17 Responses

  • brownclark

    Having trouble with duplicate files? just use "DuplicateFilesDeleter program"

    2 months ago REPLY
  • Gina

    The duplicate file finder you recommend is only for Windows.

    1 months ago REPLY
  • M. Razali

    In so far tried Cisdem DuplicateFinder and giving it a 5*. Except I was using an unregistered version of the sofeware and thus I can't get it to delete the duplicates. Any chance of a discount coupon? :)

    3 months ago REPLY
  • Vonnegut

    5 out of 5 stars for this only program Cisdem DuplicateFinder. I used this duplicate file finder for years. Others are definitely not recommended.

    5 months ago REPLY
  • Rosa Reyes

    Hi, Vonnegut, thank you for the support of our product Cisdem DuplicateFinder. We will keep up the good work.

    5 months ago REPLY
  • Helen Krieger

    Downloaded the free trial, but though it will locate duplicates it won't let you delete the extra really the free trial is more of a preview I guess.

    9 months ago REPLY
  • Rosa Reyes

    Hi, Helen Krieger, free trial version of many duplicate file finder only allows you to find duplicate files; if you want to delete them, you have to buy.

    9 months ago REPLY
  • natamolestr

    Very well written! I will immediately seize your rss as I can’t find your e-mail subscription link or newsletter service. Do you’ve any? Kindly permit me recognize so that I may subscribe.

    1 years ago REPLY
  • Rosa Reyes

    You can subscribe by clicking "SUBSCRIBE" on the lowest right corner of the page and inputting your email address, then clicking "Subscribe".

    1 years ago REPLY
  • gabapentinea

    Regards our friends,

    1 years ago REPLY
  • angelo

    Try DuplicateFilesDeleter. Helped me few months ago.

    1 years ago REPLY
  • pachy

    where can I find a mac version?

    10 months ago REPLY
  • Nina

    As far as i know, this duplicate file finder has no mac version, so I tried Cisdem duplicate finder on my macbook pro, it worked perfectly.

    8 months ago REPLY

    Thank you for writing this useful article. I tried Cisdem DuplicateFinder, it really found all of the duplicate files on my Mac. It saved my hard disk storage.

    1 years ago REPLY
  • Richard90

    Cisdem DuplicateFinder is really the best solution. I used it to find duplicate files on my Mac, it did a good job. I like it. Thank you, writer.

    1 years ago REPLY
  • Chris

    Useful article, useful tool. I tried the first one as it seemed better than others. Actually, it did well.

    1 years ago REPLY
  • Barbara123

    Writer recommended so many duplicate finders, I tried the first one. It was great!!! Thank you!!!

    1 years ago REPLY

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