Open source browser-extension projects

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

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

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

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.

Build AI agents and RPA workflows without writing code

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

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

🧩 The Browser Extension Framework

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

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

Fast file and video downloader with HLS, DASH and batch download support

🧡 Browser extension that simplifies finding and subscribing RSS and RSSHub

Browser MCP is a Model Context Provider (MCP) server that allows AI applications to control your browser

Blocks specific sites from appearing in Google search results

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

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

The cross-browser extension framework.

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

Professional-grade, local-first browser extension that transforms any webpage into high-fidelity, LLM-friendly Markdown entirely within the browser's runtime. Z

A sleek, privacy-focused browser extension that brings a native dark mode experience to online documents. Built with clean UI/UX principles for Chromium and Ope

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

E 站注射器，将中文翻译注入到 E 站体内

👻 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).

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

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

The cross-harness self-improving memory layer for AI agents.

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

Navigation minimap extension for modern AI chat interfaces, injecting responsive scrollbar indicators via Shadow DOM isolation.

💬 Chat with anyone on any website.

BookmarkHub , sync bookmarks across different browsers

KeePassXC Browser Extension

Self-hosted collaborative password manager for teams: folder-level access control, AES-256-GCM encryption, LDAP/AD, OAuth2 SSO, audit trail, REST API, browser e

Browser Extension to Sync Video Playback on All Video Platforms / 一起看视频浏览器插件，兼容所有平台

A powerful browser extension to create, edit and delete cookies

Browser-native side panel for Hermes Agent — connect web context to your local Hermes runtime.

Markdown Viewer / Browser Extension

Finds larger/original versions of images and videos

Browser extension for viewing archived and cached versions of web pages, available for Chrome, Edge and Safari

A High-Fidelity Web Archiving Extension for Chrome and Chromium based browsers!

The portal to the new, open Internet. ([I:b])

A User-Agent spoofer browser extension that is highly configurable

A browser extension that deletes your news feed and replaces it with a nice quote

DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome.

A free, open-source Chrome extension - no ads, no tracking. Based on The Great Suspender, cleaned up and actively maintained.

油猴脚本 & 浏览器扩展

社媒助手开源版 - 小红书、抖音、快手等平台数据采集的浏览器插件，可通过API调用，支持Docker部署。

Browser extension which parses competitive programming problems

Use native tab discarding method to automatically reduce memory usage of inactive tabs

StackPrism is a browser extension for detecting website technology stacks.

Privacy-focused translation with offline capabilities

Turn AI conversations into organized, reusable workflows — across major AI platforms. | 把 AI 对话转化为可组织、可复用的工作流，适用于主流 AI 平台

A power-user toolkit for ChatGPT Web — full and selective conversation export, PNG long-image export, deep-history search, timeline navigation, prompt managemen

AI gets the context. Not your private data. Local-first privacy proxy for browser chat, AI APIs, and coding agents.

A powerful browser extension that supercharges DeepSeek Chat with custom tooling, persistent memory, and seamless project scaffolding. Generate and download fil

浏览器插件：OneTab、Toby、N-Tab、SessionBuddy、KepTab 等扩展的升级替代品，功能丰富易用 | A nice, convenient, powerful tab manager serving as an upgraded alternative to OneTab, Toby, Ses

🔖 FavBox is a local-first experimental browser extension that enhances and simplifies bookmark management without cloud storage or third-party services.

Fast, open and free-to-use new tab page for modern browsers

😎 Browser extension that automatically replaces the User-Agent with a randomized one

MY NewTab: A Simple New Tab (browser's home page) inspired with Google's 'Material You' design