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Firefox
Web browser for Windows, Mac and Linux
Firefox for Android
Web browser for Android smartphones and tablets
Firefox for iOS
Firefox for iPhone, iPad and iPod touch devices
Mozilla VPN
VPN for Windows 10, Mac, Linux, Android, and iOS devices
Firefox Relay
Service that lets you create email masks to hide your real email address
Mozilla Monitor
Find out if your private information has been exposed in a known data breach.
Discover and save stories for later.
MDN Plus
MDN Plus provides a custom user experience for MDN supporters.
Hubs
Collaborate and engage with each other through spatialized audio and with media from around the web.
Firefox Focus
Automatic privacy browser and content blocker
Firefox for Enterprise
Firefox Quantum for businesses
Thunderbird
Email software for Windows, Mac and Linux
Featured Articles
Frequently Asked Questions
Learn basic tips and guidelines for using Firefox and find answers to some frequently asked questions.
End of support for Firefox Reality
Mozilla has ended support for Firefox Reality.
Will Firefox work on my mobile device?
This article lists mobile devices that you can install Firefox on.
How to contribute to the Knowledge Base
Learn how you can contribute to Mozilla Support by writing or improving support articles.
Join Our Community
Grow and share your expertise with others. Answer questions and improve our knowledge base.