Mozilla Firefox Lifecycle: End Of Life And Support Status

Last updated on January 23, 2024

Mozilla Firefox is one of the popular and free web browsers that is available for all sorts of platforms, including Windows, Linux, macOS, ChromeOS, Android, and iOS devices. It includes the majority of the modern features offered by its competitors like Chrome and Edge.

Note that only the last 3 macOS versions are supported at a time.

Support status guide

End of life (EOL) is the end of a product’s useful life. When a product reaches the end of its life cycle, the manufacturer no longer supports it. The following table explains the different phases of a product’s lifecycle. Testing status is when the product is initially released and EOL is when product support is no longer offered. The time between these two points is the support timeframe.

Testing

The software is not yet publicly available. It is in testing phase i.e., alpha, beta, release preview etc.

Active

The software is actively supported by the vendor.

Phasing Out

The software will soon reach its end of life. You need to look for upgrade or migration options. The software will automatically go into phasing out status 2 months before end of life.

End Of Life

The software is no longer supported by the vendor. You need to make sure your system and environment are safe.

Version

Released

Security Support

Firefox 122
2 months and 1 week ago
(23 January 2024)
Supported
Firefox 121
3 months and 2 weeks ago
(19 December 2023)
Ended 2 months and 1 week ago
(23 January 2024)
Firefox 120
4 months and 1 week ago
(21 November 2023)
Ended 3 months and 2 weeks ago
(19 December 2023)
Firefox 119
5 months and 1 week ago
(24 October 2023)
Ended 4 months and 1 week ago
(21 November 2023)
Firefox 118
6 months and 1 week ago
(26 September 2023)
Ended 5 months and 1 week ago
(24 October 2023)
Firefox 117
7 months and 6 days ago
(29 August 2023)
Ended 6 months and 1 week ago
(26 September 2023)
Firefox 116
8 months and 3 days ago
(1 August 2023)
Ended 7 months and 6 days ago
(29 August 2023)
Firefox 115 (ESR)
9 months ago
(4 July 2023)
Ends in 5 months and 3 weeks
(1 October 2024)
Firefox 114
9 months and 4 weeks ago
(6 June 2023)
Ended 9 months ago
(4 July 2023)
Firefox 113
10 months and 3 weeks ago
(9 May 2023)
Ended 9 months and 4 weeks ago
(6 June 2023)
Firefox 112
11 months and 3 weeks ago
(11 April 2023)
Ended 10 months and 3 weeks ago
(9 May 2023)
Firefox 111
1 year and 3 weeks ago
(14 March 2023)
Ended 11 months and 3 weeks ago
(11 April 2023)
Firefox 110
1 year and 1 month ago
(14 February 2023)
Ended 1 year and 3 weeks ago
(14 March 2023)
Firefox 109
1 year and 2 months ago
(17 January 2023)
Ended 1 year and 1 month ago
(14 February 2023)
Firefox 108
1 year and 3 months ago
(13 December 2022)
Ended 1 year and 2 months ago
(17 January 2023)
Firefox 107
1 year and 4 months ago
(15 November 2022)
Ended 1 year and 3 months ago
(13 December 2022)
Firefox 106
1 year and 5 months ago
(18 October 2022)
Ended 1 year and 4 months ago
(15 November 2022)
Firefox 105
1 year and 6 months ago
(20 September 2022)
Ended 1 year and 5 months ago
(18 October 2022)
Firefox 104
1 year and 7 months ago
(23 August 2022)
Ended 1 year and 6 months ago
(20 September 2022)
Firefox 103
1 year and 8 months ago
(26 July 2022)
Ended 1 year and 7 months ago
(23 August 2022)
Firefox 102 (ESR)
1 year and 9 months ago
(28 June 2022)
Ended 6 months and 1 week ago
(26 September 2023)

Mozilla Firefox is offered from different channels, where the mainstream stable channel receives a major update every 4 weeks. During those 4 weeks, Firefox may receive minor updates with no defined time intervals.

Other than that, Firefox is also offered in an Extended Support Release (ESR). It is the equivalent of the Long Term Servicing (LTS) channels many other software offer. The ESR channel receives major updates every 42 weeks and is designed for people who cannot adapt to frequent changes, such as developers. Firefox ESR does not come with the latest features, but it has the latest security and stability fixes.

Other than these stable channels, Firefox is also offered across 3 testing channels, or “Insider channels.”

  • Firefox Beta: This channel offers a version number higher than the one being offered to the stable, regular Firefox channel. It includes some features that may be introduced to the stable release in the next update. The Beta channel may include some bugs, but usually, it is quite stable.
  • Firefox Developer Edition: This channel is for the developers as this release includes more developer goodies than the ones available in the stable release, or the Beta release. This channel receives an update alongside the Beta version and has the same version number.
  • Firefox Nightly: This channel is the equivalent of Chrome’s Canary channel as this channel receives daily updates. The new features and improvements are fresh off the developer’s plate and have not been completely tested. Therefore, this channel may have significant bugs. This is the first channel that receives an update, after which the selected features are passed on to the Beta channel, and then eventually to the stable release.