Diff GitHub Repositories (2026) · Open Source Tools

Next-Generation AI LaTeX Editor: Don't read or write LaTeX. Just work on the PDF.

Review-first terminal diff viewer for agentic coders

TTT Editor (Terminal Text Tool): A real alternative to VS Code, Zed, and Sublime that runs in your terminal. A TUI that feels like GUI. Single binary, zero config.

👁️ Review AI generated code and plan changes

WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

OpenAPI Diff and Breaking Changes

TUI for reviewing diffs, files, and documents with inline annotations

Review your coding agent's diff in a terminal pane and send line comments back to Claude Code, Codex, OpenCode or Pi. A herdr plugin.

Free editor for huge text and log files: opens 50 GB at once, searches at 2.5 GB/s, never freezes. A free alternative to EmEditor and UltraEdit for Windows, Linux and macOS. Written in Rust.

Swiss-army toolkit for .docx — faithful DOCX→HTML rendering, an in-browser block editor, Word-grade redlines with native tracked changes, and anchor-addressed markdown for LLM agents. .NET, WASM/TypeScript, Python, CLI.

git-cola: The highly caffeinated Git GUI

A git diff pager based on delta but with a file tree, à la GitHub.

An awesome code differencing tool

A tool which helps you diff xcodeproj files.

libopenapi is a fully featured, high performance OpenAPI 3.2, 3.1, 3.0, Overlays and Arazzo parser, library, validator and toolkit for go applications.

A Diff View component for React / Vue / Solid / Svelte / Ink, same as Github

decK: Configuration management and drift detection for Kong

Tool that allows comparing symbol, type and syscall information of Microsoft Windows binaries across different versions of the OS, using a Web UI and/or LLMs.

Blazing-fast image diffing for JS, Rust and Python

µDiff - a micro Go diffing library