Developer: Mozilla

Thunderbird Portable

Windows

Redesigned version of Thunderbird that you can take with you

Thunderbird Portable

Firefox Quantum

iPhone

A free app for iPhone, by Mozilla.

Firefox Quantum

Prism

Mac

A distraction free browser

Prism

SeaMonkey

Mac

Web-browser, advanced email, IRC chat and more from Mozilla

SeaMonkey

Mozilla

Windows

Browse in speed and security with this software

Mozilla

Camino

Mac

Mozilla’s other alternative to Firefox

Camino

Firefox ESR

Mac

Firefox ESR — Stable Web Browsing

Firefox ESR

Mozilla Firefox Beta

Windows

Test the newest features first with this free open-source web browser

Mozilla Firefox Beta