Firefox GitHub Repositories (2026) · Open Source Tools

Android browser with multiple profiles, PWAs, extension and tab groups based on Geckoview

Phoenix is a suite of configurations & advanced modifications for Mozilla Firefox, designed to put the user first - with a focus on privacy, security, freedom, & usability.

Browser extension for examining SAML messages

This extension for Firefox and Chrome aims to make navigating YouTube's subscription grid easier by allowing users to hide watched videos

A private, Mac-native home for the tabs you have open now and the work you want to find again.

Filter & Control Anything on YouTube or YouTube Kids

Private AI summarizer for anything you read. Inspired by Mozilla's Orbit.

The API of WWW::Mechanize, combined with the Javascript-power of Firefox

Android Firefox-based browser with ADM, media capture, and extensions

Open-source translation extension for Chrome and Firefox with text, page, PDF, OCR, subtitles, and live dubbing.

A browser extension to translate Japanese by hovering over words.

.NET version of the Playwright testing and automation library.

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