Open-source browser-extension software
469 open-source libraries, tools and applications tagged browser-extension, ranked by how closely browser-extension is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
469 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| cameron/squirt Squirt is a speed-reading bookmarklet that displays web article text one word at a time in a Spritz-style RSVP reader. It automatically ext… | 32 | 1226 | maintenance |
| thieman/github-selfies A browser extension for Chrome and Firefox that lets users attach webcam selfies to GitHub pull requests, comments, and issues. It injects … | 32 | 1194 | maintenance |
| wseagar/eight-dollars A browser extension that distinguishes Twitter Blue subscribers from genuinely verified accounts on Twitter/X by adding visual indicators t… | 23 | 1182 | maintenance |
| jawil/GayHub GayHub is a Chrome extension that enhances the GitHub browsing experience with a VS Code-style file tree sidebar, table-of-contents navigat… | 32 | 1119 | maintenance |
| stacks-archive/blockstack-browser The Blockstack Browser is a desktop and web application for exploring the Blockstack decentralized internet, managing decentralized identit… | 10 | 1114 | maintenance |
| zenorocha/codecopy CodeCopy is a browser extension that adds a copy-to-clipboard button to every code block on supported sites like GitHub, MDN, StackOverflow… | 23 | 1104 | maintenance |
| mozilla/contain-facebook Facebook Container is a Firefox browser extension by Mozilla that isolates Facebook activity into a dedicated container tab. It prevents Fa… | 63 | 1069 | maintenance |
| Streamus Streamus is a Google Chrome browser extension that provides a YouTube-based video and music player with playlist management. It is built in… | 23 | 1069 | maintenance |
| ishan0102/vimGPT vimGPT is a Python application that lets GPT-4V browse and interact with the web visually using Playwright and the Vimium keyboard-navigati… | 28 | 2643 | experimental |
| hensm/fx_cast fx_cast is a Firefox WebExtension that implements the Chromecast (Google Cast) Web Sender API, exposing cast support to web apps and HTML5 … | 52 | 2054 | experimental |
| minh-ton/reynard-browser Reynard is an experimental Gecko-based web browser for iOS 13+, bringing the Firefox engine to a platform where third-party browsers are no… | 83 | 1813 | experimental |
| abundantbeing/hermes-browser-extension A Chrome/Edge/Chromium side-panel browser extension that connects active web context to a Hermes Agent runtime via a local gateway, Hermes … | 80 | 1655 | experimental |
| glide-browser/glide Glide is an extensible, keyboard-focused web browser built as a fork of Firefox, with modal Vim-like keymaps, a TypeScript configuration AP… | 85 | 1497 | experimental |
| TaxyAI/browser-extension Taxy is an open-source Chrome browser extension that uses GPT-4 to control the browser and perform repetitive actions on the user's behalf … | 21 | 1277 | experimental |
| betterbrowser/arcfox ArcFox is a Firefox extension plus userChrome.css theme pack that brings Arc Browser's UI style, including a vertical sidebar and tab manag… | 29 | 1241 | experimental |
| danfragoso/thdwb THDWB (The Hotdog Web Browser) is a web browser with its own layout and rendering engine, HTML/CSS parsers, and UI toolkit, written from sc… | 32 | 1140 | experimental |
| MultiboxLabs/flow-browser Flow Browser is a modern, privacy-focused desktop web browser built on Electron with Chromium rendering. It offers tabbed browsing, Chrome … | 68 | 1076 | experimental |
| SwitchyOmega SwitchyOmega is a browser extension for Chromium and Firefox that lets users manage and quickly switch between multiple proxy profiles, inc… | 23 | 22603 | abandoned |
| richards199999/Thinking-Claude Thinking Claude is a browser extension plus a set of 'thinking protocol' system instructions that make Claude's chat interface show an expl… | 55 | 17028 | abandoned |
| checkly/headless-recorder Headless Recorder is a Chrome extension that records browser interactions (clicks, typing, navigation) and generates Playwright or Puppetee… | 10 | 15309 | abandoned |
| wong2/chatgpt-google-extension A browser extension that displays ChatGPT responses alongside results from Google and other search engines like Bing, DuckDuckGo, and Brave… | 32 | 13042 | abandoned |
| scottjehl/Respond Respond.js is a fast, lightweight JavaScript polyfill that adds min/max-width CSS3 Media Query support to browsers lacking it, primarily In… | 10 | 11196 | abandoned |
| ethereum/mist Mist was the official Ethereum Foundation desktop browser for discovering and using decentralized applications (Ðapps) on the Ethereum netw… | 10 | 7416 | abandoned |
| beakerbrowser/beaker Beaker Browser was an experimental peer-to-peer web browser built on Electron that added APIs for hosting 'hostless' applications using the… | 10 | 6738 | abandoned |
| TheRealJoelmatic/RemoveAdblockThing A Tampermonkey userscript that removes YouTube's 'Ad blocker is not allowed' popup and bypasses ad blocker detection. It also provides an u… | 81 | 5976 | abandoned |
| versotile-org/verso Verso is a web browser built on top of the Servo web engine, written in Rust, aimed at exploring embedding solutions and multi-view/multi-w… | 10 | 5387 | abandoned |
| OctoLinker/OctoLinker OctoLinker is a browser extension for GitHub that turns language-specific import statements like require, include, and import into clickabl… | 23 | 5385 | abandoned |
| jdan/tota11y tota11y is an accessibility (a11y) visualization toolkit that helps developers see how their web pages violate accessibility guidelines. It… | 23 | 5066 | abandoned |
| WebKit/WebKit-http A deprecated unofficial HTTP mirror of the WebKit SVN repository, the open-source web browser engine behind Safari, Mail, and other Apple a… | 10 | 4967 | abandoned |
| kiwibrowser/src.next Kiwi Browser is a Chromium-based web browser for Android that supports Chrome desktop extensions on mobile. This repository contains the so… | 31 | 4049 | abandoned |
| facebookarchive/huxley Huxley is a Python-based testing system for catching visual regressions in web applications, built at Instagram. It records user browsing a… | 10 | 4031 | abandoned |
| ansh/jiffyreader-public-archive Jiffy Reader is a browser extension that speeds up reading on any website by bolding the initial parts of words (bionic reading style), wit… | 10 | 4007 | abandoned |
| FoundZiGu/GuJumpgate A Chrome browser extension that automated registration of free accounts and PayPal-based Plus subscription activation flows, including emai… | 10 | 3888 | abandoned |
| FastForwardTeam/FastForward FastForward is a browser extension for Chromium, Edge, and Firefox that automatically skips link shorteners and wait-for-ad interstitial pa… | 67 | 3767 | abandoned |
| JadenGeller/Helium Helium is a macOS application that provides a floating browser window that stays on top of other windows, letting users watch media or brow… | 10 | 3585 | abandoned |
| 31b4/Leetcode-Premium-Bypass A Chrome browser extension that unlocked LeetCode premium features such as company-tagged questions and frequency bars without a paid subsc… | 10 | 3383 | abandoned |
| maxchehab/CSS-Keylogging A proof-of-concept Chrome extension and Express server demonstrating a CSS-based keylogging attack using attribute selectors and background… | 32 | 3239 | abandoned |
| defunkt/dotjs dotjs is a Google Chrome extension plus a tiny local Ruby web server that executes JavaScript files from ~/.js on matching websites, with j… | 32 | 3137 | abandoned |
| YePpHa/YouTubeCenter YouTube Center is a browser extension/userscript that enhances YouTube with features like video downloading, automatic quality selection, a… | 10 | 2903 | abandoned |
| samuelmaddock/metastream Metastream is a web application and browser extension for watching streaming media (e.g., YouTube, Netflix) in sync with friends, with real… | 60 | 2648 | abandoned |
| agilebits/onepassword-app-extension An iOS action extension from AgileBits that let third-party iOS apps integrate 1Password for filling login credentials and other form data.… | 10 | 2568 | abandoned |
| Crosswalk Crosswalk is a web runtime built on Chromium/Blink that lets developers package web applications as native apps, primarily for Android and … | 10 | 2318 | abandoned |
| cehui0303/Tmall_Tickets A Chrome browser extension that automates submitting purchase orders and payment requests for Maotai liquor on Tmall Supermarket's flash sa… | 32 | 2296 | abandoned |
| ueokande/vim-vixen Vim Vixen is a Firefox WebExtension add-on that lets users navigate and control the browser with Vim-style keyboard shortcuts and a command… | 10 | 2091 | abandoned |
| zythum/mama2 MAMA2 is a browser bookmarklet/plugin project that replaces Flash video players on Chinese video sites (Bilibili, Youku, Tudou, Sohu, etc.)… | 32 | 2038 | abandoned |
| 52cik/github-hans A Tampermonkey userscript that translates the GitHub interface into Chinese for Chinese-speaking users. It is deprecated, as official Chine… | 32 | 1911 | abandoned |
| Nerver4Ever/SevenSha1UIAdvancedHelper A Tampermonkey userscript that enhances the 115 cloud storage web UI with SHA1-based file transfer and extraction features. It lets users s… | 10 | 1768 | abandoned |
| monyhar/monyhar-lite Monyhar Lite is a satirical joke browser project claiming to be a fully self-developed Chinese browser that is 600% faster than Chrome, whi… | 32 | 1763 | abandoned |
| domeccleston/sharegpt ShareGPT is an open-source Chrome extension that lets users share permanent links to ChatGPT conversations with one click, backed by a Next… | 10 | 1754 | abandoned |
| cnwangjie/better-onetab Better-Onetab is a browser extension for Chrome and Firefox that stores and manages lists of open tabs, offering a more feature-rich altern… | 10 | 1753 | abandoned |
| chromium/-archived-chromium An archived GitHub mirror of the Chromium open-source browser project, now pointing users to the active repository at github.com/chromium/c… | 10 | 1704 | abandoned |
| LadybirdBrowser/ancient-history This is the original repository for Ladybird, a cross-platform web browser written in C++ that originated from the SerenityOS project. The … | 10 | 1647 | abandoned |
| waynecz/dadda-translate-crx Dadda is a Chrome word-selection translation extension with a built-in vocabulary notebook and toast-based word memorization reminders. It … | 23 | 1640 | abandoned |
| Glance Glance (formerly OpenSpritz) is a speed-reading bookmarklet that displays web page text word-by-word using RSVP (Rapid Serial Visual Presen… | 32 | 1565 | abandoned |
| promptpirate-x/discord-id-bypass-tool A browser-based tool (HTML/Three.js) that renders an animated 3D avatar head with mouth movement to trick Discord's k-ID face-scan age veri… | 43 | 1523 | abandoned |
| isanchop/stuhack A Chrome extension that attempted to unlock Studocu premium features such as removing premium banners, bypassing document blur, and enablin… | 10 | 1506 | abandoned |
| szhu/3030 A novelty browser game built around the 2015 Chrome %%30%30 URL-canonicalization crash bug, where hovering over tree links crashes vulnerab… | 32 | 1501 | abandoned |
| fossasia/susi_firefoxbot A Firefox WebExtension that lets users chat with the SUSI.AI assistant from the browser toolbar without leaving the current tab. It is a Ja… | 32 | 1497 | abandoned |
| Entromorgan/Autoticket A Python/Selenium automation tool that automatically snipes and purchases tickets on Damai.cn (China's major ticketing site) by driving Chr… | 10 | 1448 | abandoned |
| chase/awrit Awrit is a graphical web browser that renders actual Chromium content inside the Kitty terminal using the Kitty graphics protocol, with mou… | 10 | 1380 | abandoned |
| nang-dev/hover-paywalls-browser-extension Hover is an open-source Chrome browser extension that bypasses paywalls on news sites and blocks ads and tracking modules. It works via web… | 23 | 1309 | abandoned |
| Enhanced Steam Enhanced Steam is an open-source Chrome browser extension that enhances the Steam store experience with features like wishlist sorting, his… | 10 | 1305 | abandoned |
| Refined Twitter A browser extension that simplifies the Twitter web interface and adds quality-of-life features like hiding promoted tweets, auto-loading n… | 10 | 1296 | abandoned |
| vimperator/vimperator-labs Vimperator is a Firefox extension (with a companion Muttator for Thunderbird) that makes the browser look and behave like the Vim text edit… | 23 | 1205 | abandoned |
| dannvix/NflxMultiSubs A Chrome/Firefox browser extension that adds bilingual (dual) subtitles to the Netflix web player, integrating with Netflix's native langua… | 32 | 1164 | abandoned |
| rizwansoaib/whatsapp-monitor TrackWapp is an open-source WhatsApp online-status tracker consisting of a Chrome/Firefox browser extension and companion apps that notify … | 10 | 1159 | abandoned |
| WICG/EventListenerOptions A WICG proposal and polyfill extending the DOM event pattern with EventListenerOptions, allowing developers to register passive event liste… | 10 | 1156 | abandoned |
| paulrouget/firefox.html An experimental project that re-implements the Firefox browser UI entirely in HTML instead of native XUL. The repository has moved to brows… | 32 | 1121 | abandoned |
| jessepollak/command A Chrome browser extension that brings Slack-style slash commands (like /giphy, /emoji, /selfie) to any text field on the web. It lets user… | 23 | 1100 | abandoned |
| AllanWang/Frost-for-Facebook Frost is an open-source third-party Facebook client for Android built as a web wrapper with extensive theming, multi-account support, and n… | 10 | 1095 | abandoned |
| Kenguba/google-access-helper A cracked (modified) version of the 'Google Access Helper' Chrome extension that bypasses the Great Firewall to access Google services and … | 67 | 1093 | abandoned |
| eramdam/BetterTweetDeck Better TweetDeck is a browser extension that adds many quality-of-life features to TweetDeck, the Twitter/X column-based dashboard. It supp… | 10 | 1093 | abandoned |
| algolia/github-awesome-autocomplete A browser extension for Chrome, Firefox, and Safari that replaces GitHub's search bar with Algolia-powered instant search and autocomplete.… | 10 | 1071 | abandoned |
| ParticleCore/Particle YouTube Plus (codename Particle) is a browser extension/userscript that adds extra features to YouTube's HTML5 player. It runs via Greasemo… | 10 | 1052 | abandoned |
| cloudroc/baidu-nolimit A tiny Chrome extension that bypasses Baidu Netdisk's large-file download restrictions by spoofing the navigator.platform property so the w… | 32 | 1041 | abandoned |
| doug/depthjs DepthJS is a browser extension and native plugin (primarily for Chrome) that lets any web page interact with the Microsoft Kinect via JavaS… | 32 | 1001 | abandoned |
| ZuodaoTech/everyone-can-use-english Everyone Can Use English is an open-source project combining a well-known English learning book with the Enjoy app, an AI-powered language … | 71 | 38533 | active |
| AIHawk AIHawk is an open-source Python AI agent that automates job applications by scraping job postings via browser automation and auto-applying … | 87 | 32150 | active |
| OpenWork OpenWork is a free, open-source desktop app for building and sharing AI agent workflows, positioned as an open-source alternative to Claude… | 79 | 24170 | active |
| Zotero Zotero is a free, open-source reference management application for collecting, organizing, annotating, citing, and sharing research sources… | 76 | 15465 | stable |
| Playwright for Python Playwright for Python is a library to automate Chromium, Firefox, and WebKit browsers with a single API, supporting both sync and async Pyt… | 92 | 15012 | stable |
| Plasmo Framework Plasmo is an open-source framework and SDK for building browser extensions with React and TypeScript. It handles bundling, manifest generat… | 69 | 13158 | active |
| seleniumbase/SeleniumBase SeleniumBase is an all-in-one Python browser automation framework for web testing, crawling, and scraping, built on Selenium/WebDriver with… | 93 | 13040 | active |
| Listen 1 Listen 1 is an open-source music player that aggregates search and playback from multiple Chinese streaming platforms (NetEase Cloud Music,… | 53 | 11433 | active |
| NopeCHA NopeCHA is an AI-powered CAPTCHA solving service distributed as a browser extension (Chrome/Firefox/Edge) plus Python and Node.js client li… | 87 | 10997 | active |
| chathub-dev/chathub ChatHub is an all-in-one AI chat client, originally a Chrome/Edge browser extension and now also a web app and mobile/desktop apps, that le… | 58 | 10658 | active |
| ntegrals/openbrowser Open Browser is a TypeScript framework that lets AI agents autonomously control a web browser to complete tasks like clicking, typing, navi… | 62 | 9542 | active |
| eze-is/web-access An Agent Skill that gives AI coding agents (Claude Code, Cursor, Gemini CLI, etc.) full web access capabilities: three-tier channel dispatc… | 63 | 9124 | active |
| n4ze3m/page-assist Page Assist is an open-source browser extension that adds a sidebar and web UI for interacting with locally running AI models like Ollama f… | 91 | 8225 | active |
| BrowserMCP/mcp Browser MCP is an MCP server plus Chrome extension that lets AI applications like Claude, Cursor, VS Code, and Windsurf control the user's … | 25 | 7171 | active |
| autoscrape-labs/pydoll Pydoll is a Python library for automating Chromium-based browsers directly over the Chrome DevTools Protocol, with no WebDriver binary and … | 84 | 7107 | active |
| bb-browser bb-browser is a TypeScript CLI and MCP server that lets AI agents control your real Chrome browser using your existing login state, exposin… | 64 | 6241 | active |
| lesspass/lesspass LessPass is a stateless, open-source password manager that deterministically generates site-specific passwords from a single master passwor… | 77 | 6065 | active |
| microsoft/Webwright Webwright is a Python framework from Microsoft that turns coding LLMs into state-of-the-art browser agents by giving them a terminal to lau… | 54 | 6011 | active |
| iodefog/VipVideo A Mac/Windows desktop aggregator app that bundles web players for TV, video, music, and novel platforms (CCTV live, iQiyi, Tencent Video, M… | 93 | 5963 | active |
| asciimoo/hister Hister is a self-hosted, privacy-focused personal search engine that indexes the full contents of visited web pages and local files. It off… | 82 | 5936 | active |
| AidLux (AidLearning) AidLux (originally AidLearning) is an AIoT development platform that runs a native Ubuntu Linux environment with GUI, deep learning tooling… | 63 | 5812 | active |
| Uniswap Interface The open-source repository for Uniswap Labs' front-end interfaces, including the Uniswap web app, the Uniswap Wallet mobile app, and the wa… | 94 | 5534 | active |
| Obsidian Obsidian Web Clipper is the official browser extension for Obsidian that lets users highlight web pages and capture content as durable Mark… | 85 | 5230 | active |
| FellouAI/eko Eko is a production-ready JavaScript framework for building reliable AI agents and agentic workflows from natural language, running in both… | 57 | 4961 | active |