Firefox

Firefox is a free and open source web browser developed by Mozilla Foundation. First released in 2002 under the name Phoenix. It’s available for most operating systems including Windows, macOS, Linux and most phones and tablets.

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puppeteer / puppeteer

Star 92.6k

JavaScript API for Chrome and Firefox

testing firefox chrome automation web chromium developer-tools node-module headless-chrome

Updated Oct 15, 2025
TypeScript

playwright

microsoft / playwright

Star 78.3k

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

electron javascript testing firefox chrome automation web test chromium test-automation testing-tools webkit end-to-end-testing e2e-testing playwright

Updated Oct 15, 2025
TypeScript

gorhill / uBlock

Star 59.1k

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

javascript firefox chromium ublock-origin browser-extension blocker ublock

Updated Oct 15, 2025
JavaScript

mkcert

FiloSottile / mkcert

Sponsor

Star 56.8k

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

windows macos linux tls firefox ios chrome https certificates localhost local-development root-ca

Updated Aug 13, 2024
Go

zen-browser / desktop

Sponsor

Star 37k

Welcome to a calmer internet

firefox firefox-browser firefox-based zen-browser

Updated Oct 15, 2025
C++

ArchiveBox

ArchiveBox / ArchiveBox

Sponsor

Star 25.2k

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

python rss backups firefox pinboard youtube-dl chromium self-hosted wget pocket browser-bookmarks warc web-archiving wayback-machine digipres singlefile headless-browser bookmark-archiver internet-archiving archivebox

Updated May 19, 2025
Python

octotree

ovity / octotree

Star 23.1k

GitHub on steroids

github firefox chrome opera safari edge code-review browser-extension code-files pull-request-review

Updated Jun 6, 2024
JavaScript

SingleFile

gildas-lormeau / SingleFile

Star 19.3k

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

javascript chrome-extension cli firefox screenshot chrome osint browser firefox-addon annotations snapshot selenium archive archiver self-extracting-zip web-clipper puppeteer auto-save offline-reading self-extracting

Updated Apr 24, 2025
JavaScript

cat-catch

xifangczy / cat-catch

Star 16k

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

javascript chrome-extension jquery firefox chrome video-downloader firefox-extension m3u8-downloader

Updated Oct 13, 2025
JavaScript

playwright-python

microsoft / playwright-python

Star 13.8k

Python version of the Playwright testing and automation library.

firefox chromium webkit playwright

Updated Oct 13, 2025
Python

Anarios / return-youtube-dislike

Star 13.3k

Chrome extension to return youtube dislikes

chrome-extension firefox youtube firefox-addon firefox-extension dislike dislikes dislikes-count dislike-button

Updated Oct 14, 2025
TypeScript

HackBrowserData

moonD4rk / HackBrowserData

Star 13k

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

windows macos golang firefox chrome browser hacking edge browser-extension pentest-tool

Updated Oct 5, 2025
Go

MetaMask / metamask-extension

Star 12.8k

🌐 🔌 The MetaMask browser extension enables browsing Ethereum blockchain enabled websites

firefox chrome extension opera ethereum dapp edge brave dapp-developers

Updated Oct 15, 2025
TypeScript

ext-saladict

crimx / ext-saladict

Star 12.8k

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