Multi functional app to find duplicates, empty folders, similar images etc.

Copy/paste detector for programming source code.

Extremely fast tool to remove duplicates and other lint from your filesystem

Deduplication tool for yarn.lock files

Interesting (non-cryptographic) hashes implemented in pure Python.

Vidupe is a program that can find duplicate and similar video files. V1.211 released on 2019-09-18, Windows exe here:

Quickly detect already witnessed data.

Loads async data for Redux apps focusing on preventing duplicated requests and dealing with async dependencies.

A deduplicator

Plugin for Mongoose that turns duplicate errors into regular Mongoose validation errors

CLI utility to find duplicate files

Duplicates Detector is a cross-platform 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.

Command-line program for managing a media collection, with focus on Content-Based Image Retrieval (Computer Vision) methods for finding duplicates.

Nextcloud Media Duplicate Collector application

A simple tool for detecting near-duplicate source code

Remove Duplicate Messages

Advanced Duplicate File Finder for Python

JS script that allows you to remove duplicates from your Last.fm scrobbles library.

Katalog is an application to manage catalogs of disks and files to search and get statistics.

Advanced similarity and duplicate source code at scale.