Open source browser projects
Every project in the registry tagged browser, ranked by real GitHub adoption.
The React Framework
An independent browser engine built from scratch, not a fork
Chrome DevTools for coding agents
A browser based code editor
Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.
Fast, AI-native web browser built for automation and scraping
The Serenity Operating System 🐞
A completely customizable framework for building rich text editors. (Currently in beta.)
Anti detect browser and web browsing agent: an open-source MCP server for undetected browsing, AI web scraping and computer use agents. No captchas.
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
⚡️ Streaming torrent client for the web
The most advanced free and open-source browser fingerprinting library
The headless browser for AI agents and web scraping
The official GitHub mirror of the Chromium source
Fast, private browser that puts you first
Automate any website workflow with AI and computer vision
☕️ Classic, reliable, trusted test framework for Node.js and the browser
Web Extension for saving a faithful copy of a complete web page in a single HTML file
Privacy-first browser with ad-blocking and no bloat
A powerful obfuscator for JavaScript and Node.js
The fastest browser for AI agents to run browser automation, built for sharing your logged-in browser state with your AI agents, like Codex or Claude Code, with
The API and real-time application framework
Extract and decrypt browser data, supporting multiple data types, runnable on various operating systems (macOS, Windows, Linux).
A type-safe TypeScript SQL query builder
Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own LLM API key. Alternative to OpenAI Operator.
🌐 The open-source Agentic browser; alternative to ChatGPT Atlas, Perplexity Comet, Dia.
Simple peer-to-peer with WebRTC.
Firefox for iOS
A keyboard-driven, vim-like browser based on Python and Qt.
A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers
Firefox fork with compiler optimizations and patches from Librewolf, Waterfox, and GNU IceCat.
Open-source testing agent for UI, API, security, accessibility & visual QA
SNS browser. Facebook, Instagram, Reddit, Threads, X and more in a single app. No ads.
Fast, secure browsing with powerful organization features
A libre Android browser built from scratch on Gecko. Privacy by default, powerful tab containers, and a local-first search engine.
AI coding agent that sees your live app and edits code
Fast, secure, and privacy-focused web browsing
Related tags
Frequently asked questions
How many open source browser projects are there?
This registry tracks 38 projects tagged browser, with 901,166 GitHub stars between them. The most-adopted is next.js at 142,343 stars.
Are these browser projects free to use?
Yes — 36 of the 38 carry an explicit open-source licence across 7 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which browser project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these browser projects still maintained?
35 of the 38 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.