A duplicate finder and removal app is absolutely necessary for multiple reasons. Firstly, duplicate files consume valuable storage space on your device. By identifying and eliminating duplicates, you can liberate storage and optimize your device's performance.
Moreover, duplicate files can lead to confusion and hinder the ability to find the original version of a file. A duplicate finder and removal app assists in organizing your files and streamlining your workflow. Lastly, eliminating duplicates can bolster data security by reducing the risk of inadvertently working with outdated or incorrect files.
In this article, you will find a list of the best free and open-source duplicate finder apps.
dupeGuru is a cross-platform GUI tool designed to help you find and manage duplicate files on your computer. It supports Linux, OS X, and Windows operating systems.
Written primarily in Python 3, dupeGuru utilizes multiple GUI toolkits, all built on the same core Python code. On OS X, it employs Objective-C and Cocoa for the UI layer, while on Linux and Windows, it utilizes Python and Qt5.
- File and Content Scanning: dupeGuru can scan both filenames and contents to identify duplicate files. Its filename scan includes a fuzzy matching algorithm that can locate duplicate filenames even if they are not an exact match.
- Efficient Fuzzy Matching Algorithm: With dupeGuru's quick fuzzy matching algorithm, you can find your duplicate files in minutes.
- Music Mode: Designed specifically for music files, dupeGuru's Music mode can scan tags and display music-related information in the duplicate results window.
- Picture Mode: For image files, dupeGuru's Picture mode can scan pictures fuzzily, enabling you to find similar images that are not exactly the same.
- Customizable Matching Engine: Adjust dupeGuru's matching engine to suit your needs and find the exact kind of duplicates you want to identify.
- Safety Measures: dupeGuru's engine is designed with safety in mind, featuring a reference directory system and grouping system to prevent accidental deletion of files.
- File Management Options: In addition to deleting duplicate files, dupeGuru allows you to move or copy them to another location. It also provides various filtering and sorting options to help you weed out false duplicates.
- Multi-Language Support: dupeGuru supports multiple languages, including English, French, German, Chinese (Simplified), Czech, Italian, Armenian, Russian, Ukrainian, Brazilian, and Vietnamese.
2- Antares Duplicate File Finder
Antares Duplicate File Finder is a convenient and flexible program for finding duplicate files.
It offers scan settings, the ability to preview files, a user-friendly interface with detailed information, and the option to view file properties.
DuplicaErase is a free lightweight duplicate file remover tool for Windows. It efficiently identifies and removes duplicate files, freeing up valuable disk space and optimizing storage usage.
Note that some antivirus programs may show false virus alerts due to the file deletion functionality. Avoid using this tool on the "C" drive or where Windows is installed.
DuplicateFinder is a small application that helps you find duplicated files on your computer. With a simple interface, you just need to select the hard drive or folder and click start to let the application find the duplicates for you.
- Multiple instances and multiple searches with the same instance.
- Search a specific drive for duplicates.
- Search by name, size, modification date.
- Search by ByteByByte.
- Search by extension.
- Ignore files smaller than or larger than specified size.
- Ignore hidden files and system file paths.
5- Duplicate file finder (Windows)
Duplicate file finder is a free and open-source app that helps you remove duplicate files and free up system memory.
DupFinder is a free and open-source duplicate file finder and cleanup tool for Windows XP/Vista/7/8.
It can help free up hard drive space by detecting and removing duplicate files, including files with the same contents but different names, versions of a file, and zero-length files. It offers fast detection and has an easy-to-use and intuitive GUI.
MediaFileDuplicateFinder is a program that helps you find duplicated video, image, and audio files.
It identifies duplicates based on similarity, even if they have different resolution, frame rate, watermark, or video file tags. This cross-platform program is compatible with Windows, Linux, and macOS.
- Finds duplicate videos / images based on similarities
- Fast scanning speed
- Cross-platform: Windows, Linux and MacOS
- Windows Installer (MSI package), which includes ffmpeg binaries.
- Play/Open Videos and Images from the list of duplicate files.
- Optionally select duplicate files with lower resolution for deletion.
- Open-source app, released under the GNU Library or Lesser General Public License version 3.0 (LGPLv3)
7- Duplicate File Finder 2.2
Duplicate File Finder 2.2 by Autosofted is a free tool that helps users find and delete duplicate files in a specific folder and its sub-folders. It offers features such as full folder and subdirectory file search, a smart progress bar, the ability to detect any type of file, and the option to open file locations and delete selected files.
- Full folder and folder-subdirectory file search
- Smart progress bar
- Can detect any type of file
- Ability to open file location of selected file
- Ability to delete files that you choose
MULTITAS is a file management software for 64-bit Windows 7/8/10 OS that allows you to remove duplicate files and move files between directories.
GDuplicateFinder is a free cross-platform application that can search for file duplicates, including files on the network. It utilizes Groovy and GPars to process in parallel, making it easy and efficient to remove duplicate files.
- Supported network shares (SMB, SSH, Amazon S3, FTP)
- Manage network drives(add, edit, remove)
- Turn on/off network drives
- Save/load duplicates results session
- Stop, save, load and resume a search for duplicates
- Open duplicate files with system's default editor
- Internationalization (Spanish, English, Portuguese, Traditional Chinese, Simplified Chinese)
- Receive update notifications
DUFF is a free and open-source GUI duplicate file finder and processor for Windows
Duplicate Files Finder is a cross-platform application for finding and removing duplicate files by deleting, creating hardlinks or creating symbolic links. A special algorithm minimizes the amount of data read from disk, so the program is very fast.
12- Yet Another Duplicate File Remover
Another duplicate file finder/remover. But this one is ULTRA FAST, safe, easy to use and of course free and open source.