Firefox browser

This page was last updated at: May 5, 2026

Firefox is a web browser that runs on Desktop & Mobile devices, across a variety of operating systems. It is developed by Mozilla Foundation. It has been developed for about 22 years since launching in 2004.

About Firefox

Browser URL www.mozilla.org/firefox/
Browser made by Mozilla Foundation
Development Status Active
The browser is actively maintained and developed
Launched 2004
Launched on Android 2011
Launched on iOS 2015
Operating Systems Android, iOS, BSD, Linux, macOS, Windows
Device platforms Desktop, Mobile
Rendering Engine Gecko (and WebKit on iOS)
Extensions/Addons Firefox supports extensions
Source Code Repository
Browser Sync Firefox supports syncing between different devices
Firefox browser sync lets you synchronise your bookmarks, browsing history, saved passwords, and more between devices. You need to use a free Mozilla account for this to work.
Read more about Firefox syncing

Get Firefox

Apple iOS Store Firefox browser on the iOS App Store
Google Play Firefox browser on Google Play
Wikipedia Article https://en.wikipedia.org/wiki/Firefox
Wikipedia Article Wikipedia: Firefox for Android
Wikipedia Article Wikipedia: Firefox for iOS
Review
2002-10-07
 Linux Orbit reviews the Phoenix 0.2 web browser
Firefox was originally known as/codenamed "Phoenix"

Firefox milestones

  1. Initial release of Firefox 1.0
  2. Firefox starts supporting TLS 1.2
    A newer, more secure encryption protocol, Firefox v31
    Read more
  3. Firefox stops supporting SSL 3.0
    SSL 3.0 is old and insecure, support dropped in Firefox v39
    Read more
  4. Firefox starts supporting TLS 1.3
    A newer, more secure encryption protocol, Firefox 63

Check out other browsers similar to Firefox

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