Firefox-based Browsers

Privacy-centric, open-source browser with unique UI features like vertical tabs, Split View, and Zen Glance, focusing on security and tranquility.

Enhance privacy with a secure, portable browser that hides your IP and encrypts connections on multiple platforms, maintaining anonymity.

Privacy-focused browser with over 500 settings for enhanced security and performance, independent of Firefox, and not affiliated with Mozilla.

The Floorp project is a project that seeks privacy and a balance between anonymity and the public nature of the web.

Waterfox is an open-source, privacy-focused browser based on the popular open source browser with a red panda as a mascot. It is designed to be a drop-in replacement for said browser that offers enhanced privacy features, performance improvements, and customizability while...

The Mullvad Browser is a privacy-focused web browser developed in a collaboration between Mullvad VPN and the Tor Project. It’s designed to minimize tracking and fingerprinting. You could say it’s a Tor Browser to use without the Tor Network.

IronFox is a fork of DivestOS's Mull Browser based on Firefox. Our goal is to continue the legacy of Mull to provide a secure, hardened and privacy-oriented browser for daily use.

An open-source web browser forked from Mozilla Firefox. It focuses on security, efficiency, customization, and no data gathering.

Browser using the Gecko layout engine to render web pages, which implements current and anticipated web standards.

Firefox Developer Edition brings you latest features, fast performance, and the development tools you need to build for the open web. Its powerful development tools will extend your ability to work across multiple platforms from one place.

Firefox Focus is the Mozilla-made browser that considers your privacy first and foremost. By default, it blocks ad-trackers and it helps keep things secure by providing easy ways to clear your browsing history, including passwords and cookies.

A web browser for Android, based on Mozilla's Fenix version of Firefox, GeckoView and Mozilla Android Components.

Gnuzilla is the GNU version of the Mozilla suite, and GNU IceCat is the GNU version of the Mozilla Firefox browser. Its main advantage is an ethical one: it is entirely free software.

A Floorp fork with custom branding and KDE patches by OpenSUSE. Features include pre-installed extensions like Ublock Origin and canvasblocker.

K-Meleon is an extremely fast, customizable, lightweight web browser based on the Gecko layout engine developed by Mozilla which is also used by Firefox. K-Meleon is free, open source software released under the GNU General Public License and is designed specifically for...

Extensible browser built on Firefox with modal keymaps, TypeScript configs, fuzzy tab manager, site-specific controls, web extensions, and open source support.

Basilisk is a free and Open Source XUL-based web browser, featuring the well-known Firefox-style interface and operation. It is based on the Goanna layout and rendering engine (a fork of Gecko) and builds on the Unified XUL Platform (UXP), which in turn is a fork of the Mozilla...

A privacy-centric web browser, with an elegant UI and a robust built-in ad blocker, all designed with anonymity in mind.

r3dfox is a fork of the open source web browser Mozilla Firefox made specifically for Windows Vista, 7, and 8 compatibility.

An experimental Firefox fork that enhances focus and increases work productivity due to its hyper minimalistic UI and built-in tools.

Mozilla's official alternative to Mozilla Firefox, with ability to install unsigned addons in release version

Mypal is a current and maintained Windows XP web browser. Mypal is based on Mozilla Firefox code from a couple years ago, but is still actively maintained with security and feature updates by the developer.

A Firefox build for web scraping and anti-bot evasion. It injects fingerprints at a low level, modifying device info in C++ instead of using JS, and is designed to blend in with regular user traffic.

A tool to create Firefox profiles with good defaults.

Historically, Iceweasel was a re-branding of Mozilla Firefox by the Debian project, with minimal modifications, in order to resolve branding disputes. Debian since discontinued Iceweasel in February of 2017 after reaching an agreement with Mozilla over the use of its trademark.