All of source code of Floorp 12, the most Advanced and Fastest Firefox derivative 🦊
Mozilla GitHub Repositories (2026) · Open Source Tools
Discover the best Mozilla open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
Neqo, the Mozilla Firefox implementation of QUIC in Rust
Firefox privacy, security and anti-tracking: a comprehensive user.js template for configuration and hardening
Front-end to complement mozilla/addons-server
A full-featured browser reference implementation using Mozilla Android Components.
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.
Firefox for iOS
New stumbler application for contributing data to geolocation services