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 |
|---|---|---|---|
| dimdenGD/OldTwitter A browser extension that restores the old Twitter layout from 2015 (with an optional 2018 design) by fully replacing the modern Twitter cli… | 98 | 2734 | active |
| puemos/hls-downloader A browser extension that automatically detects HTTP Live Streaming (HLS) playlists on web pages and lets users download selected video and … | 89 | 2714 | active |
| xmcp/pakku.js pakku.js is a browser extension for Chrome, Edge, and Firefox that automatically merges repeated (spam) danmaku (bullet comments) on the Ch… | 74 | 2681 | active |
| pt-plugins/PT-depiler PT-depiler is a Manifest v3 browser extension that improves efficiency when using private tracker (PT) sites, succeeding PT-Plugin-Plus. It… | 100 | 2670 | active |
| insin/control-panel-for-twitter Control Panel for Twitter is a browser extension for desktop and mobile browsers that gives users more control over their Twitter/X experie… | 95 | 2642 | active |
| EnixCoda/Gitako Gitako is a free browser extension that adds a file tree sidebar to GitHub, with instant file search and keyboard navigation. It works on C… | 96 | 2604 | active |
| greasemonkey/greasemonkey Greasemonkey is a user script manager for Firefox that lets users install and manage small scripts which customize web page behavior. It pr… | 67 | 2602 | active |
| molvqingtai/WebChat A decentralized browser extension that lets visitors of the same website chat anonymously via WebRTC peer-to-peer, end-to-end encrypted com… | 93 | 2571 | active |
| ungoogled-software/ungoogled-chromium-windows Windows packaging and build scripts for ungoogled-chromium, a Chromium variant with all Google services and tracking removed. It provides b… | 93 | 2564 | active |
| abrahamjuliot/creepjs CreepJS is a web application that performs advanced device and browser fingerprinting to expose weaknesses in anti-fingerprinting browsers … | 67 | 2520 | active |
| gijsdev/ublock-hide-yt-shorts A uBlock Origin filter list that hides all traces of YouTube Shorts videos. It is imported into uBlock Origin's dashboard as a custom filte… | 78 | 2507 | active |
| kevmo314/magic-copy Magic Copy is a browser extension (Chrome, Firefox, and Figma) that uses Meta's Segment Anything Model to segment a foreground object from … | 21 | 2454 | active |
| dimdenGD/OldTweetDeck A browser extension that restores the classic (old) TweetDeck interface on X/Twitter. It works on Chromium-based browsers and Firefox by in… | 84 | 2442 | active |
| she-llac/claude-counter A minimal browser extension (and userscript) that overlays token counts, cache countdown timers, and session/weekly usage bars on claude.ai… | 51 | 2440 | active |
| glidea/banana-prompt-quicker A Chrome extension that lets users quickly insert curated and custom prompts into Google AI Studio, Gemini, and any website input box via r… | 58 | 2414 | active |
| 0x48piraj/fadblock FadBlock Origin is a browser extension that blocks YouTube ads by detecting ads and fast-forwarding through them in under 100 milliseconds,… | 10 | 2382 | active |
| Ladybird Ladybird is a truly independent web browser built on a novel engine written from scratch based on web standards, with no forks of existing … | 70 | 66581 | experimental |
| ajayyy/DeArrow DeArrow is an open-source browser extension that crowdsources better titles and thumbnails for YouTube videos, replacing sensationalized cl… | 94 | 2299 | active |
| GrapheneOS/Vanadium Vanadium is a privacy and security hardened variant of Chromium that serves as the standard browser and WebView provider on GrapheneOS. It … | 95 | 2231 | active |
| vibheksoni/stealth-browser-mcp A Python MCP server that exposes stealth browser automation (via nodriver and Chrome DevTools Protocol) to AI agents, letting them navigate… | 61 | 2213 | active |
| Chrome++ Next Chrome++ Next is a version.dll injection (DLL hijack) that augments Google Chrome on Windows with tab enhancements, hotkey remapping, boss … | 91 | 2179 | active |
| TizenTube TizenTube Cobalt is a YouTube client app built on Google's Cobalt runtime that brings an ad-free, enhanced viewing experience to non-Tizen … | 93 | 2167 | active |
| lqzhgood/wechat-need-web A Chrome/Edge/Firefox browser extension (Manifest V3) that re-enables access to WeChat's web client. It is a TypeScript refactor of the old… | 43 | 2153 | active |
| blueagler/DeepL-Helper A Chromium browser extension that unlocks DeepL free-tier restrictions, including the 5,000-character limit, editing restrictions on docume… | 41 | 2102 | active |
| A9T9/RPA Ui.Vision RPA is an open-source robotic process automation tool delivered as a browser extension for Chrome, Edge, and Firefox, compatible … | 94 | 2064 | active |
| extesy/hoverzoom Hover Zoom+ is an open-source browser extension that enlarges images and videos to full size when you hover your mouse over them on support… | 97 | 2061 | active |
| pt-plugins/PT-Plugin-Plus PT-Plugin-Plus is a Web Extensions browser plugin for Chrome, Edge, and Firefox that streamlines using private tracker (PT) sites, enabling… | 10 | 7799 | maintenance |
| daymade/Twitter-Block-Porn A Tampermonkey/Greasemonkey userscript that batch-blocks Twitter/X accounts from shared blocklists of porn-spam scammers. It simulates Twit… | 74 | 2029 | active |
| gautamkrishnar/motrix-webextension A WebExtension that redirects browser downloads to the Motrix Download Manager via its RPC interface. It works with Chrome, Edge, Opera, an… | 97 | 2020 | active |
| plateaukao/einkbro EinkBro is a lightweight, fast Android web browser built on Android WebView, optimized for E-Ink devices with zero animations, high-contras… | 96 | 2019 | active |
| Notifier for GitHub A browser extension for Chrome, Firefox, Edge, Opera, and Brave that displays GitHub notification counts in the toolbar and shows desktop n… | 43 | 1984 | active |
| black-ant/Ant-Browser Ant Browser is a desktop anti-detect (fingerprint) browser for managing multiple isolated browser profiles, each with its own proxy binding… | 75 | 1955 | active |
| aeonfun/opendia OpenDia is an open-source browser extension (npm package) that connects your Chrome, Arc, or Firefox browser to AI models via the Model Con… | 86 | 1927 | active |
| TiddlyWiki/TiddlyDesktop TiddlyDesktop is a special-purpose desktop browser built on nw.js for working with locally stored TiddlyWiki files (both TiddlyWiki 5 and C… | 73 | 1913 | active |
| karlicoss/promnesia Promnesia is a browser extension plus Python backend that enhances browsing history by annotating visited pages with context from multiple … | 79 | 1908 | active |
| Justineo/github-hovercard A browser extension that adds neat hovercards to GitHub, showing instant user, repo, issue, and commit information on hover. Available for … | 10 | 1890 | active |
| mumuy/browser A JavaScript library for user-agent analysis and browser detection that identifies browser, engine, OS, device, GPU, network, and other cli… | 75 | 1884 | active |
| ShunCai/QZoneExport A browser extension (Chrome/Edge/Firefox, Manifest V3) that backs up QQ Zone data—posts, blogs, private diaries, albums, videos, comments, … | 84 | 1863 | active |
| webpilot-ai/Webpilot Webpilot is a free, open-source browser extension that acts as a 'Copilot for the web', letting users converse with web page content withou… | 72 | 1859 | active |
| Reamd7/notion-zh_CN A localization script that translates the Notion app and website into Chinese (Simplified and Traditional). It works via a Tampermonkey use… | 23 | 7013 | maintenance |
| muaz-khan/RecordRTC RecordRTC is a server-less, client-side JavaScript library for recording WebRTC audio, video, screen, and canvas media streams directly in … | 23 | 6919 | maintenance |
| infi-pc/locatorjs LocatorJS is a browser extension and library that lets developers click on any UI component in the browser to open its source code in their… | 75 | 1825 | active |
| poooi/poi poi is a scalable desktop browser and tool set built specifically for the browser game Kantai Collection (KanColle). It is an Electron app … | 95 | 1801 | active |
| Augmented Steam Augmented Steam is a browser extension for Chrome, Firefox, and Edge that enhances the Steam platform with price history, ownership highlig… | 99 | 1785 | active |
| VideoTogether/VideoTogether VideoTogether is a browser extension that synchronizes video playback across devices so friends and family can watch videos together remote… | 62 | 1779 | active |
| adsbypasser/adsbypasser AdsBypasser is a lightweight userscript that automatically skips countdown ads, continue/redirect pages, and prevents ad pop-up windows acr… | 99 | 1775 | active |
| ken107/read-aloud Read Aloud is a browser extension for Chrome, Firefox, and Edge that reads aloud webpage content using text-to-speech with one click. It wo… | 68 | 1772 | active |
| ghostery/ghostery-extension Ghostery is a browser extension that blocks ads, trackers, and cookie pop-ups across Firefox, Chrome, Opera, Edge, Safari, and Yandex. It p… | 95 | 1755 | active |
| Better xCloud Better xCloud is a userscript (and companion Android app) that enhances the Xbox Cloud Gaming experience on xbox.com/play, adding features … | 85 | 1751 | active |
| LauZzL/doubao-downloader A browser extension and Tampermonkey userscript for batch-downloading watermark-free images and videos generated by the Doubao (Dola) AI ch… | 84 | 1740 | active |
| truefedex/tv-bro TV Bro is a simple open-source web browser for Android that is optimized for use with a TV remote control. It supports tabs, bookmarks, voi… | 87 | 1738 | active |
| mandatoryprogrammer/CursedChrome CursedChrome is a Chrome extension implant that converts a victim's Chrome browser into a fully-functional HTTP proxy, letting an operator … | 32 | 1727 | active |
| interstellard/chatgpt-advanced WebChatGPT is a browser extension for Chrome, Firefox, and Edge that augments ChatGPT (and later Claude/Gemini) prompts with real-time web … | 23 | 6428 | maintenance |
| reek/anti-adblock-killer Anti-Adblock Killer is a userscript (AakScript) plus an AdBlock-style filter list (AakList) that together prevent websites from detecting a… | 23 | 6214 | maintenance |
| coral-xyz/backpack Backpack is an open-source crypto wallet browser extension built in TypeScript, serving as a home for xNFTs and supporting Solana, Ethereum… | 23 | 1660 | active |
| Sparticuz/chromium A TypeScript library that packages a serverless-optimized Chromium binary (Brotli-compressed) with decompression code and predefined launch… | 96 | 1651 | active |
| elementdavv/internet_archive_downloader A Chrome and Firefox browser extension that downloads borrowable books from Internet Archive (archive.org) and full-view books from HathiTr… | 70 | 1651 | active |
| za515217965/OKBrowser OKBrowser is a free Chromium-based anti-fingerprint browser for Windows that lets users create and manage multiple isolated browser profile… | 48 | 1636 | active |
| smol-ai/GodMode GodMode is an Electron-based desktop chat browser that gives quick keyboard-shortcut access to the full web apps of ChatGPT, Claude, Bard, … | 21 | 6015 | maintenance |
| yossdotpro/removerized Removerized is an open-source, browser-based AI image toolkit for background removal and image upscaling, running entirely client-side via … | 82 | 1627 | active |
| kkHAIKE/fake115 A Tampermonkey userscript that disguises the browser as the official 115 client to bypass login and download restrictions on the 115 cloud … | 64 | 1625 | active |
| Online Dictionary Helper Online Dictionary Helper is a Chrome/Firefox browser extension that shows definitions of selected words and phrases from online or built-in… | 76 | 1617 | active |
| actionbook/actionbook Actionbook is an AI agent that lives in a Chrome side panel and operates websites on your behalf, reading data behind logins and paywalls a… | 71 | 1607 | active |
| dessant/web-archives Web Archives is an open-source browser extension for finding archived and cached versions of web pages across multiple search engines like … | 81 | 1602 | active |
| Raindrop.io Source code for Raindrop.io 5.0, a bookmark and web-clipping manager, provided as a monorepo containing the web app, browser extensions, an… | 83 | 1598 | active |
| Xatta-Trone/medium-parser-extension A browser extension for Chrome, Edge, and Firefox that lets users read member-only articles on medium.com and Medium-based sites (e.g. Towa… | 56 | 1590 | active |
| webrecorder/archiveweb.page ArchiveWeb.page is a high-fidelity web archiving tool that runs as a Chrome/Chromium browser extension and as a standalone Electron app. It… | 94 | 1587 | active |
| aaronjanse/dns-over-wikipedia A browser extension (with an optional Rust redirect script) that redirects domains ending in `.idk` by looking up the site's Wikipedia arti… | 50 | 1577 | active |
| SwingTheVine/Wplace-BlueMarble Blue Marble is a Tampermonkey userscript that overlays template images onto the wplace.live pixel-art canvas, showing users exactly where t… | 70 | 1571 | active |
| oxylabs/browser-agent-py A Python SDK for Oxylabs AI Studio's Browser Agent, a cloud service that automates real-user browsing tasks (clicking, typing, scrolling, s… | 10 | 1565 | active |
| Ulixee Hero Hero is a headless web browser built specifically for web scraping, powered by Chrome and controlled from NodeJS with a fully compliant DOM… | 59 | 1557 | active |
| F9y4ng/GreasyFork-Scripts A collection of open-source userscripts for desktop browsers, most notably Font Rendering (Customized) for high-quality web typography and … | 76 | 1532 | active |
| gitcoffee-os/postbot PostBot is an open-source multi-platform content synchronization assistant that publishes articles, notes, images, videos, and audio to man… | 62 | 1524 | active |
| manojVivek/medium-unlimited A browser extension for Chrome and Firefox that unlocks Medium.com membership-only articles by bypassing the paywall. It supports medium.co… | 10 | 5462 | maintenance |
| duckduckgo/duckduckgo-privacy-extension DuckDuckGo Privacy Essentials is a browser extension for Firefox, Chrome, Edge, and Opera that blocks third-party trackers and ads, manages… | 99 | 1501 | active |
| fanglingsu/vimb Vimb is a lightweight, modal web browser built on WebKitGTK that behaves like the Vimperator plugin for Firefox, offering Vim-style keybind… | 85 | 1481 | active |
| asbplayer/asbplayer asbplayer is a browser-based media player and Chrome/Firefox extension for language learners who study through subtitled video. It lets use… | 100 | 1480 | active |
| sienori/simple-translate Simple Translate is a browser extension (WebExtension) that lets users quickly translate selected text on web pages or typed text via a too… | 82 | 1464 | active |
| runningcheese/RunningCheese-Firefox RunningCheese Firefox is a customized, portable distribution of the Firefox browser with a polished UI, themes, and pre-configured tweaks b… | 47 | 1462 | active |
| Zendriver Zendriver is an async-first Python web scraping and browser automation framework built on the Chrome Devtools Protocol, forked from nodrive… | 88 | 1455 | active |
| PreMiD PreMiD is a utility that displays your web browsing, video, music, and browser game activity in your Discord profile via Discord Rich Prese… | 59 | 1453 | active |
| scrapy-plugins/scrapy-playwright A Scrapy download handler that uses Playwright for Python to fetch pages, enabling scraping of JavaScript-rendered sites while keeping the … | 83 | 1452 | active |
| k1995/github-i18n-plugin A Tampermonkey userscript that translates the GitHub.com interface into Chinese (and Japanese), localizing menus, titles, buttons, and othe… | 68 | 1445 | active |
| omegaee/my-fingerprint A lightweight browser extension built on Manifest V3 that protects against browser fingerprinting across Chrome, Edge, and Firefox. It spoo… | 89 | 1441 | active |
| tilfinltd/aws-extend-switch-roles A browser extension for Chrome, Firefox, and Edge that extends the AWS Management Console's built-in IAM role switching. It lets users conf… | 89 | 1429 | active |
| greatsuspender/thegreatsuspender The Great Suspender is a free, open-source Google Chrome extension that automatically suspends inactive tabs to free up memory and CPU. It … | 23 | 5075 | maintenance |
| amitbl/blocktube BlockTube is a WebExtension for Chrome and Firefox that filters and blocks unwanted YouTube content such as videos, channels, and comments … | 59 | 1408 | active |
| gioxx/MarvellousSuspender The Marvellous Suspender is a free, open-source Chrome extension that automatically suspends inactive tabs to free memory and CPU, based on… | 98 | 1403 | active |
| Drive4ik/simple-tab-groups A Firefox WebExtension for creating, modifying, and quickly switching between tab groups, with support for multiple browser windows, contai… | 77 | 1399 | active |
| WindRunnerMax/TKScript A collection of GreaseMonkey/TamperMonkey userscripts and browser extensions written in TypeScript, including tools like Force Copy, link r… | 60 | 1386 | active |
| iszhouhua/social-media-copilot An open-source browser extension (built with WXT and TypeScript) that scrapes data from Chinese social media platforms including Xiaohongsh… | 64 | 1373 | active |
| liquidx/webviewscreensaver A macOS screen saver plugin that renders web pages inside a WebKit view, cycling through a configurable list of URLs. It can be installed v… | 46 | 1354 | active |
| AdguardTeam/AdGuardExtra AdGuard Extra is a userscript and browser extension that combats ad-blocking circumvention on sites where regular filter rules fail. It wor… | 33 | 1350 | active |
| yourduskquibbles/webannoyances Web Annoyances Ultralist is a filter list for uBlock Origin and AdGuard that removes annoying web elements like sticky headers, floating vi… | 32 | 1348 | active |
| nonbili/NouTube NouTube is an Android and desktop application that wraps the mobile YouTube and YouTube Music web apps in a webview, adding ad blocking, ba… | 81 | 1346 | active |
| helloyanis/age-verification-bypass A Firefox WebExtension that skips age verification screens on sites like AgeChecker.net, AgeVerif, Bluesky, Reddit, and AliExpress. It is a… | 80 | 1346 | active |
| useful-forks/useful-forks.github.io Useful Forks is a web tool and Chrome extension that improves GitHub fork discoverability by automatically filtering out forks with no comm… | 66 | 1339 | active |
| salvadordf/CEF4Delphi CEF4Delphi is a component library that embeds Chromium-based browsers (via CEF) into applications built with Delphi or Lazarus/Free Pascal.… | 97 | 1332 | active |
| jmerle/competitive-companion A browser extension that parses competitive programming problems from online judges like Codeforces, AtCoder, and Kattis. It extracts test … | 90 | 1332 | active |
| lindylearn/unclutter Unclutter is a browser extension for Chrome and Firefox that provides a modern reader mode by modifying a page's CSS to remove ads and clut… | 23 | 1322 | active |