Firefox Open Source Projects

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

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

A simple zero-config tool to make locally trusted development certificates with any names you'd like.

🗃 Open source self-hosted web archiving. Takes URLs/browser history/bookmarks/Pocket/Pinboard/etc., saves HTML, JS, PDFs, media, and more...

GitHub on steroids

Dark Reader Chrome and Firefox extension

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

猫抓 浏览器资源嗅探扩展 / cat-catch Browser Resource Sniffing Extension

FFmpeg for browser, powered by WebAssembly

HLS.js is a JavaScript library that plays HLS in browsers with support for MSE.

Python version of the Playwright testing and automation library.

A JavaScript Framework for Building Brilliant Applications

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

Chrome extension to return youtube dislikes

Deploy headless browsers in Docker. Run on our cloud or bring your own. Free for non-commercial uses.

Skip YouTube video sponsors (browser extension)

Bitwarden client apps (web, browser extension, desktop, and cli).

🥗 All-in-one professional pop-up dictionary and page translator which supports multiple search modes, page translations, new word notebook and PDF selection searching.

:globe_with_meridians: :electric_plug: The MetaMask browser extension enables browsing Ethereum blockchain enabled websites

Firefox for iOS

📊 APIs for web automation, testing, and bypassing bot-detection.

Firefox privacy, security and anti-tracking: a comprehensive user.js template for configuration and hardening

one for all free music in china (chrome extension, also works for firefox)

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

Make use of your favicon with badges, images or videos

简悦 ( SimpRead ) - 让你瞬间进入沉浸式阅读的扩展

Lighter web automation with Python

All of source code of Floorp 12, the most Advanced and Fastest Firefox derivative 🦊

uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox, and Safari.

:cloud: Sync your bookmarks privately across browsers and devices

Powerfull download accelerator and video downloader

The all-in-one tool to supercharge your productivity ⌨️

WebDriver Classic proxy for automating Firefox through Marionette

🐒 Normalize browsers' default style

:mailbox_with_mail: Easily and securely share files from the command line. A fully featured Firefox Send client.

⚠️ Browser fingerprinting via favicon!

⚠️ Fenix (Firefox for Android) moved to a new repository. It is now developed and maintained as part of: https://github.com/mozilla-mobile/firefox-android

a modern & lightweight HTML5 game engine

A Vim-like interface for Firefox, inspired by Vimperator/Pentadactyl.

Map your keys for web surfing, expand your browser with javascript and keyboard.

Translate your page in real time using Google, Bing or Yandex

🦊 I respect proton UI and aim to improve it.

😍FeHelper--Web前端助手（Awesome！Chrome & Firefox & MS-Edge Extension, All in one Toolbox!）

DEPRECATED - Mozilla's new typeface, used in Firefox OS

(maintance) Create modern cross-browser extensions with no build configuration.

An enhancer/customiser for the all-in-one productivity workspace Notion

ClearURLs is an add-on based on the new WebExtensions technology and will automatically remove tracking elements from URLs to help protect your privacy.

Opinionated paranoid text spacing in JavaScript

Zotero translator中文网页抓取翻译器🎉This is Zotero translators for Chinese Sites(beta), not the official Zotero repo

Firefox extension for managing tabs and bookmarks in sidebar.

A keyboard shortcut browser extension for keyboard-based navigation and tab operations with an advanced omnibar

Collection of userstyles affecting the browser

Example Firefox add-ons created using the WebExtensions API

JavaScript port of Vim

Zotero plugin to manage your attachments: automatically rename, move, and attach PDFs (or other files) to Zotero items, sync PDFs from your Zotero library to your (mobile) PDF reader (e.g. an iPad, Android tablet, etc.), and extract PDF annotations.

A library that scrapes Linkedin for user data

AdGuard browser extension

Greasemonkey scripts ( Pagetual / Picviewer CE+ / DownloadAllContent ) 油猴腳本集 ユーザースクリプト集

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

一站式划词 / 截图 / 网页全文 / 音视频 AI 翻译扩展。