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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.
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
Customizing Firefox Using AutoConfig
How to use AutoConfig files to set and lock preferences that are not covered by Firefox policies.
Sync logins in Firefox for iOS
How to enable logins sync on Firefox for iOS so that you can access your logins across other synced devices.
Enable and disable cookies that websites use to track your preferences
Websites store things like your preferences, login status, and trackers in "cookies" on your computer. Learn how to manage cookies in Firefox.
Firefox does not work - Common fixes to get you back up and running
Find solutions to Firefox issues like crashing, not starting, slowness and websites not loading.
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