Firefox section

Firefox Release Schedule
January 13th 2026	February 17th 2026	March 17th 2026
January 13th 2026	February 17th 2026	March 17th 2026
Firefox 149 nightly	Firefox 150 nightly	Firefox 151 nightly
Firefox 148 Beta	Firefox 149 Beta	Firefox 150 Beta
Firefox 147 Release	Firefox 148 Release	Firefox 149 Release

Popup windows and Firefox: interactive demos

Testing sound (audio/midi content-type) in Firefox

Resources for Firefox: help, tips, resources, FAQs and solutions to problems

Firefox Support: Help and Tutorials
Using Firefox: a complete online text book designed to help you get the most out of the open source web browser. Available in 8 languages!
Firefox 146 for Developers
Extensions for Firefox Available in dozens of languages!
Firefox Support forum at MozillaZine
References on about:config entries and related properties Fine-tune preferences in Firefox. This is for intermediate and advanced Firefox users

International resources for Firefox users

Firefox International Download the latest version of Firefox in your platform and in your language (96 languages available)
Mozilla Japan
Mozilla 中国中心
Setting up Firefox Web Browsers for Multilingual and Unicode Support

Last update: December 12th 2025