GUI Diff Tool for Excel

Show/Merge differences in directories and their content (text files) in Light/Dark designs

Visual Diff‑Merge: Effortlessly compare and merge code in a responsive split‑view interface, with interactive change selection and support for over 180 programming languages.

Desktop tool for work with GitLab merge requests

🔵 Sketch diff tool

A Vim9.1 plugin for managing three-way merges; pure vim9script.

A diff/merge tool for KeePassXC databases

Open source side-by-side comparison tool for images, videos, audio, 3D models and documents. GPU-accelerated with 50+ analysis modes, 100+ transitions, and professional export options.

Adobe Customer Journey Analytics (CJA) Solution Design Reference generator with Data View diff comparison, multi-format output, snapshot tracking, and automated quality validation. Production-ready CLI for analytics governance.

XML semantic diff merge tool

gawd is a Python library and command-line tool for computing syntactic differences between two GitHub Actions workflow files.

A powerful, cross-platform localization tool built with Flutter. Visually compare, manage, and translate i18n files (JSON, XML, ARB) with or without AI assistance.

Configurable change reporting for RDF vocabularies

A java based tool to generate diff report of two excel files as detailed in READ-ME

Application for comparing responses from different Large Language Models (LLMs) side-by-side

Supporting material for the video "How to Create a Simple but Effective Diff-Tool in Python" published on my YouTube channel.

A simple, fast, and privacy-focused text comparison tool powered by Monaco Editor. Compare text side-by-side with VS Code's diff engine and generate unified diff patches. Works completely offline. Available for Windows, macOS, and Linux.

A Python GUI tool for visualizing differences between directories and files. Features side-by-side comparison with color-coded changes, directory structure visualization, and multi-format file support (PDF, TXT, DOCX). Built with Tkinter and difflib for intuitive file and folder comparison.

A simple command-line tool to see the difference between two CSV files.

Compare JSON, YAML, TOML and more side by side. Client-side diff tool with structured comparison, syntax highlighting and local history.

High Performance battle tested JSON diff tool for big files >500MB. I need to create a heavy duty easy conflict resolution for my wife. But yea you can also use the tool. 🤷‍♂️.

Comparison of regulatory versions

A tool for compare, merge, display difference and make OCR between the PDFs.

IEnumerableCorrelater knows to compare two IEnumerables or strings. It returns the distance between them, and returns two arrays which represent their "best match". IEnumerableCorrelater can be used to create diff tools.

codiff is a diff tool that can find the difference between two text documents. Just paste or drag and drop.

Implementation of the Myers diff algorithm with O(ND) complexity, multiple output formats, and benchmarking suite.

Advanced file comparison tool with multiple diff modes, export options, and modern interface

A lightweight web-based text diff viewer built with jsdiff, supporting character, word, line, and patch diffs with file upload support.

> A fast and flexible command-line tool to compare CSV files using composite keys and generate clean, structured diffs.

HTTP response diff tool - send identical requests to two servers and compare their responses