Open Source Browsers & Extensions Tools

uBlock ★ 68K

uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

Ladybird ★ 66K

An independent browser engine built from scratch, not a fork

chrome-devtools-mcp ★ 52K

Chrome DevTools for coding agents

monaco-editor ★ 47K

A browser based code editor

Zen Browser ★ 44K

Privacy-focused browser with powerful customization

servo ★ 38K

Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.

serenity ★ 34K

The Serenity Operating System 🐞

refined-github ★ 32K

:octocat: Browser extension that simplifies the GitHub interface and adds useful features

slate ★ 32K

A completely customizable framework for building rich text editors. (Currently in beta.)

Avalonia ★ 32K

Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI

webtorrent ★ 31K

⚡️ Streaming torrent client for the web

fingerprintjs ★ 28K

The most advanced free and open-source browser fingerprinting library

obscura ★ 27K

The headless browser for AI agents and web scraping

quasar ★ 27K

Quasar Framework - Build high-performance VueJS user interfaces in record time

nextai-translator ★ 25K

基于 ChatGPT API 的划词翻译浏览器插件和跨平台桌面端应用 - Browser extension and cross-platform desktop application for translation based on ChatGPT API.

chromium ★ 25K

The official GitHub mirror of the Chromium source

Brave ★ 24K

Fast, private browser that puts you first

mocha ★ 23K

☕️ Classic, reliable, trusted test framework for Node.js and the browser

SingleFile ★ 22K

Web Extension for saving a faithful copy of a complete web page in a single HTML file

Helium ★ 21K

Privacy-first browser with ad-blocking and no bloat

daily ★ 20K

daily.dev is the personalized developer news feed and community. Get the best tech content from all over the web in your browser new tab or on mobile. Free and

Screenity ★ 19K

Free, private screen recording for Chrome

javascript-obfuscator ★ 16K

A powerful obfuscator for JavaScript and Node.js

ego-lite ★ 16K

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

Harper ★ 15K

Fast grammar checking that respects your privacy

feathers ★ 15K

The API and real-time application framework

LanguageTool ★ 15K

AI-powered grammar checker for 30+ languages

HackBrowserData ★ 15K

Extract and decrypt browser data, supporting multiple data types, runnable on various operating systems (macOS, Windows, Linux).

kysely ★ 14K

A type-safe TypeScript SQL query builder

nanobrowser ★ 14K

Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own LLM API key. Alternative to OpenAI Operator.

BrowserOS ★ 14K

🌐 The open-source Agentic browser; alternative to ChatGPT Atlas, Perplexity Comet, Dia.

peerjs ★ 13K

Simple peer-to-peer with WebRTC.

plasmo ★ 13K

🧩 The Browser Extension Framework

firefox-ios ★ 13K

Firefox for iOS

qutebrowser ★ 12K

A keyboard-driven, vim-like browser based on Python and Qt.

Betterfox ★ 11K

Firefox user.js for optimal privacy and security. Your favorite browser, but better.

chatGPTBox ★ 11K

Integrating ChatGPT into your browser deeply, everything you need is here

buster ★ 9.3K

Captcha solver extension for humans, available for Chrome, Edge and Firefox

thorium ★ 7.5K

Chromium fork named after radioactive element No. 90. Source code and Linux releases. Windows/MacOS/ARM builds served in different repos, links are towards the

RSSHub-Radar ★ 7.3K

🧡 Browser extension that simplifies finding and subscribing RSS and RSSHub

Requestly ★ 6.8K

Intercept, modify, and debug HTTP(S) requests effortlessly

ublacklist ★ 6.6K

Blocks specific sites from appearing in Google search results

BilibiliSponsorBlock ★ 6.1K

一款跳过小电视视频中恰饭片段的浏览器插件，移植自 SponsorBlock。A browser extension to skip sponsored segments in videos, ported from the SponsorBlock

obsidian-clipper ★ 5.2K

Highlight and capture the web in your favorite browser. The official Web Clipper extension for Obsidian.

I-Still-Dont-Care-About-Cookies ★ 4.2K

Debloated fork of the extension "I don't care about cookies"

search-by-image ★ 3.7K

Browser extension for reverse image search, available for Chrome, Edge and Safari

EhSyringe ★ 3.7K

E 站注射器，将中文翻译注入到 E 站体内

GhostText ★ 3.6K

👻 Use your text editor to write in your browser. Everything you type in the editor will be instantly updated in the browser (and vice versa).

Deta Surf ★ 3.6K

Browser and notebook combined with local-first AI

web-ext ★ 3.1K

A command line tool to help build, run, and test web extensions

aliasvault ★ 3.1K

Privacy-first password manager with built-in email aliasing. Fully encrypted and self-hostable.

SmartProxy ★ 2.7K

Firefox/Chrome browser extension. SmartProxy will automatically enable/disable proxy for the sites you visit, based on customizable patterns.

WebChat ★ 2.6K

💬 Chat with anyone on any website.

BookmarkHub ★ 2.6K

BookmarkHub , sync bookmarks across different browsers

Thorium-Win ★ 2.5K

Chromium fork for Windows named after radioactive element No. 90; Windows builds of https://github.com/Alex313031/Thorium

luakit ★ 2.3K

Fast, small, webkit based browser framework extensible by Lua.

reynard-browser ★ 1.7K

An experimental Gecko-based web browser for iOS 13+.

Mercury ★ 1.5K

Firefox fork with compiler optimizations and patches from Librewolf, Waterfox, and GNU IceCat.

Flow ★ 1.1K

Fast, secure browsing with powerful organization features

Linguist ★ 1.1K

Privacy-focused translation with offline capabilities

WebLibre ★ 985

A libre Android browser built from scratch on Gecko. Privacy by default, powerful tab containers, and a local-first search engine.

Thorium-Android ★ 785

Thorium builds for Android (arm64 and arm32).

Browser Operator ★ 508

Open-source AI browser for intelligent web automation

Midori Browser ★ 396

Fast, secure, and privacy-focused web browsing