Open Source Apps for finding duplicate files and images Apps

Czkawka is a simple, fast, written in Rust and easy to use app to remove unnecessary files from your computer.

dupeGuru is a free and open source tool to find duplicate files on your computer. It can scan either filenames or contents. The filename scan features a fuzzy matching algorithm that can find duplicate filenames even when they are not exactly the same.

SD Maid SE (aka SD Maid 2) is a file management tool for Android that specialises in maintenance. Its core purpose is freeing up space and removing unwanted data.

AntiDupl.NET can find and display duplicate images in the main graphic formats: JPEG, GIF, TIFF, BMP and PNG. The comparison is based on the contents of the files, so the program can find not only almost identical, but similar images.

FSlint is a utility to find and clean various forms of lint on a filesystem. I.E. unwanted or problematic cruft in your files or file names. For example, one form of lint it finds is duplicate files. It has both GUI and command line modes.

Free and open-source differential file synchronization software for Windows, macOS, and Linux. ByteSync securely compares and transfers only file differences — no VPN, no setup, just fast, encrypted, cross-platform sync and backup.

Video Duplicate Finder is a cross-platform software to find duplicated video (and image) files on hard disk based on similiarity. That means also finds duplicates which have a different resolution, frame rate etc.

Pixiple searches your files for images that are similar in pixel and/or metadata content and presents you with a sorted list of similar image pairs to compare and manipulate. Pixiple is open source, no-nonsense, unrestricted and completely free.

Blazing-fast, all-in-one system optimizer. Improve your computer's efficiency with powerful cleaning and tuning tools.

SD Maid helps maintain a clean device by offering a variety of tools for managing apps and files. It can remove leftover files from uninstalled apps, manage installed apps, search for files, provide a detailed overview of storage, optimize databases, and remove expendable files.

Rdfind is a program that finds duplicate files. It is useful for compressing backup directories or just finding duplicate files. It compares files based on their content, NOT on their file names.

A commandline tool to find unnecessary files (duplicates, tmpfiles, unstripped binaries and more)

A program that can find duplicate or similar video files. Video simili duplicate cleaner compares the video content regardless of different format or compression used (digital video fingerprinting), while other software only find identical files .

Duplicate Detector is a GUI utility for finding duplicate files, allowing you to delete or link them to save space. Duplicate files are displayed and processed on two synchronized panels for efficient and convenient operation.

imagededup is a python package that simplifies the task of finding exact and near duplicates in an image collection.

Finddupe is a tool for quick detecting of duplicate files on a hard drive under Windows. Duplicate files can be detected, hardlinked, or deleted. Finddupe can also search for hardlinked files on your computer.

Crap Killer is a CMD script which uses a Heuristic Detection Algorithm to find and automatically uninstall "crapware" (toolbars and 'coupon printers' for example) from all current versions of Windows.

jdupes - A greatly improved fork of fdupes duplicate scanner. Ported to Windows and Mac OS X with binary releases available.

FDUPES is a program for identifying or deleting duplicate files residing within specified directories.

Aperito is a somewhat scriptable duplicate file manager. It can simply used to cleanup a directory of duplicate files but it also allows you to perform much more complex deduplication. For example, if you want to delete all files under Dir3 that also exist under Dir1 or Dir2 but...

fclones is a command line utility that identifies groups of identical files and gets rid of the file copies you no longer need. It comes with plenty of configuration options for controlling the search scope and offers many ways of removing duplicates.

Detwinner is a tool for the Linux desktop which allows searching and removing duplicate files and similar images.

Essential Excel Add-In is a Microsoft Excel Add-In, written in VBA, that contains useful User Defined Functions (UDFs) and Macros to performs a number of different tasks that either Excel does not provide.

SameSame is a collection of tools that free up wasted disk space by linking identical files together, moving them, or deleting the duplicate files altogether. This tool includes separate utilities for handling archive files.

GDuplicate-Finder - GDuplicate Finder - A Groovy way to find duplicates among your computer and network shares!