Mozilla Firefox

Mozilla Firefox
Firefox Logo2019.png
Firefox new tab.png
Mozilla Firefox (in its Quantum UI design used in versions 57-88) on Ubuntu
Developer(s)Mozilla Foundation
Operating system
Initial release version
Initial release date
Latest release version94.0.2, 91.3.0esr
Latest release date2021-11-19

Mozilla Firefox is a web browser developed by Mozilla Corporation from 2002 and the successor to Netscape. It runs on Windows, macOS, Linux, Android and iOS. The first public version was released in 2004.

Versions[edit | edit source]

Name Versions Release date Notes
Mozilla Firefox 0.x 0.1 - 0.9.3 2002 (Phoenix)

2003 (Firebird)

First version to be released. Also called Phoenix or Firebird. Only version to work correctly on some builds of Windows XP due to Visual C++ assert errors.
Mozilla Firefox 1.x 1.0rc1 - 2004 First version to be released publicly and last version to support Windows 95, Mac OS X Cheetah and Mac OS X Puma.
Mozilla Firefox 2.x - 2006 Last version to officially support Windows NT 4.0, Windows 98, Windows Me, Mac OS X Jaguar and Mac OS X Panther. Later versions (up to 9.0) can be unofficially installed on 98 and Me through the use of the KernelEx compatibility layer.
Mozilla Firefox 3.x 3.0a1 - 3.6.28 2008 Minor interface changes and last version to support Mac OS X Tiger and PowerPC-based Macs and to properly work on Windows 2000 build 1946.1
Mozilla Firefox 4.x 3.7a1 - 4.0.1 2011 Comes with upgraded interface and first x64 version for Linux and macOS
Mozilla Firefox 5.x 5.0a2 - 5.0.1 First version to have a rapid release cycle
Mozilla Firefox 6.x 6.0a1 - 6.0.2 Last version to support Android 2.0 and to properly work on Windows Vista build 5048
Mozilla Firefox 7.x 7.0a1 - 7.0.1
Mozilla Firefox 8.x 8.0a1 - 8.0.1
Mozilla Firefox 9.x 9.0a1 - 9.0.1 Last version to work correctly on Windows 98 and Me with KernelEx.
Mozilla Firefox 10.x 10.0a1 - 10.0.2 (normal), 10.0.12esr (ESR) 2012 First version to have an ESR cycle (Extended Support Release)
Mozilla Firefox 11.x 11.0a1 - 11.0
Mozilla Firefox 12.x 12.0a1 - 12.0 Last version to officially support Windows 2000. Later versions (up to 52.0) can be installed through unofficial patches to the operating system.
Moziila Firefox 13.x 13.0a1 - 13.0.1 First version to have updated home page
Mozilla Firefox 14.x 14.0a1 - 14.0.1
Mozilla Firefox 15.x 15.0a1 - 15.0.1
Mozilla Firefox 16.x 16.0a1 - 16.0.2 Last version to support Mac OS X Leopard and to work correctly on some Windows Longhorn builds
Mozilla Firefox 17.x 17.0a1 - 17.0.1 (normal), 17.0.11esr (ESR)
Mozilla Firefox 18.x 18.0a1 - 18.0.2 2013
Mozilla Firefox 19.x 19.0a1 - 19.0.2 Last version to support Android 2.1
Mozilla Firefox 20.x 20.0a1 - 20.0.1 Last version to run properly on Windows Longhorn build 4093
Mozilla Firefox 21.x 21.0a1 - 21.0
Mozilla Firefox 22.x 22.0a1 - 22.0
Mozilla Firefox 23.x 23.0a1 - 23.0.1 New logo
Mozilla Firefox 24.x 24.0a1 - 24.0 (normal), 24.8.1esr (ESR)
Mozilla Firefox 25.x 25.0a1 - 25.0.1
Mozilla Firefox 26.x 26.0a1 - 26.0.1
Mozilla Firefox 27.x 27.0a1 - 27.0.1 2014
Mozilla Firefox 28.x 28.0a1 - 28.0.1
Mozilla Firefox 29.x 29.0a1 - 29.0.1 First version to have Australis interface
Mozilla Firefox 30.x 30.0a1 - 30.0
Mozilla Firefox 31.x 31.0a1 - 31.0 (normal), 31.8.0esr (ESR) Last version to support Android 2.2
Mozilla Firefox 32.x 32.0a1 - 32.0.3
Mozilla Firefox 33.x 33.0a1 - 33.1.1
Mozilla Firefox 34.x 34.0a1 - 34.0.5 First version to have Firefox Hello
Mozilla Firefox 35.x 35.0a1 - 35.0.1 2015
Mozilla Firefox 36.x 36.0a1 - 36.0.4
Mozilla Firefox 37.x 37.0a1 - 37.0.2
Mozilla Firefox 38.x 38.0a1 - 38.0.6 (normal), 38.8.0esr (ESR)
Mozilla Firefox 39.x 39.0a1 - 39.0.3
Mozilla Firefox 40.x 40.0a1 - 40.0.3 First version to officially support Windows 10
Mozilla Firefox 41.x 41.0a1 - 41.0.2
Mozilla Firefox 42.x 42.0a1 - 42.0 First x64 version for Windows
Mozilla Firefox 43.x 43.0a1 - 43.0.4
Mozilla Firefox 44.x 44.0a1 - 44.0.2 2016
Mozilla Firefox 45.x 45.0a1 - 45.0.2 (normal), 45.9.0esr (ESR) Last version to support Android 3.0
Mozilla Firefox 46.x 46.0a1 - 46.0.1 Last version to run properly on Windows Longhorn build 4074
Mozilla Firefox 47.x 47.0a1 - 47.0.2 Last version to support Android 2.3

Mozilla Firefox 48.x

48.0a1 - 48.0.2 Added Process Separation (e10s). Last version to support Mac OS X Snow Leopard, Mac OS X Lion and OS X Mountain Lion. Also the last version to support Windows and Linux for SSE processors
Mozilla Firefox 49.x 49.0a1 - 49.0.2 Discontinued support for Firefox Hello
Mozilla Firefox 50.x 50.0a1 - 50.1.0
Mozilla Firefox 51.x 51.0a1 - 51.0.3 2017
Mozilla Firefox 52.x 52.0a1 - 52.0.2 (normal), 52.9.0esr (ESR) Last version to support NPAPI plugins other than Adobe Flash. NPAPI plugins other than Adobe Flash are disabled in the normal release, but enabled in the ESR release. Last version to officially support Windows XP, Windows Vista and 32-bit macOS. Later versions can be installed on Vista through unofficial patches to the operating system[1].
Mozilla Firefox 53.x 53.0a1 - 53.0.3 First version to have no support for NPAPI plugins other than Adobe Flash. Last version to unofficialy support Windows 2000 with unofficial patches
Mozilla Firefox 54.x 54.0a1 - 54.0.1
Mozilla Firefox 55.x 55.0a1 - 55.0.3 Last version to support Android 4.0
Mozilla Firefox 56.x 56.0a1 - 56.0.2
Mozilla Firefox 57.x 57.0a1 - 57.0.4 Changed the logo and major changes
Mozilla Firefox 58.x 58.0a1 - 58.0.2 2018
Mozilla Firefox 59.x 59.0a1 - 59.0.3
Mozilla Firefox 60.x 60.0a1 - 60.0.2 (normal), 60.9.0esr (ESR)
Mozilla Firefox 61.x 61.0a1 - 61.0.2
Mozilla Firefox 62.x 62.0a1 - 62.0.3
Mozilla Firefox 63.x 63.0a1 - 63.0.3 Last version with a RSS feed reader
Mozilla Firefox 64.x 64.0a1 - 64.0.2
Mozilla Firefox 65.x 65.0a1 - 65.0.2 2019
Mozilla Firefox 66.x 66.0a1 - 66.0.5
Mozilla Firefox 67.x 67.0a1 - 67.0.4 First version to ask to make a new profile after installing older versions and first ARM64 version for Windows
Mozilla Firefox 68.x 68.0a1 - 68.0.2 (normal), 68.10.0esr (ESR) Last version to support Android 4.1-4.4
Mozilla Firefox 69.x 69.0a1 - 69.0.3 First version to have Adobe Flash Player disabled by default
Mozilla Firefox 70.x 70.0a1 - 70.0.1 New logo and minor changes in About
Mozilla Firefox 71.x 71.0a1 - 71.0 Support for "Picture-in-Picture" on Windows
Mozilla Firefox 72.x 72.0a1 - 72.0.2 2020 Support for "Picture-in-Picture" on macOS and Linux
Mozilla Firefox 73.x 73.0a1 - 73.0.1
Mozilla Firefox 74.x 74.0a1 - 74.0.1
Mozilla Firefox 75.x 75.0a1 - 75.0
Mozilla Firefox 76.x 76.0a1 - 76.0.1
Mozilla Firefox 77.x 77.0a1 - 77.0.1
Mozilla Firefox 78.x 78.0a1 - 78.0.2 (normal), 78.15.0esr (ESR) Last version to run on OS X Mavericks (10.9), OS X Yosemite (10.10) and OS X El Capitan (10.11)
Mozilla Firefox 79.x 79.0a1 - 79.0
Mozilla Firefox 80.x 80.0a1 - 80.0.1
Mozilla Firefox 81.x 81.0a1 - 81.0.2 First version to have the Firefox Alpenglow theme
Mozilla Firefox 82.x 82.0a1 - 82.0.3
Mozilla Firefox 83.x 83.0a1 - 83.0 First version to have HTTPS-Only Mode
Mozilla Firefox 84.x 84.0a1 - 84.0.2 First version to support the Apple M1 processor natively
Mozilla Firefox 85.x 85.0a1 - 85.0.2 2021 First version that no longer supports Adobe Flash Player
Mozilla Firefox 86.x 86.0a1 - 86.0.1 Support for "Picture-in-Picture" for multiple videos
Mozilla Firefox 87.x 87.0a1 - 87.0 Support for the built-in screen reader of macOS, VoiceOver
Mozilla Firefox 88.x 88.0a1 - 88.0 Disabled support for FTP.
Mozilla Firefox 89.x 89.0a1 - 89.0 Major changes to the interface with the introduction of the new Proton UI, however it can be disabled until version 90.
Mozilla Firefox 90.x 90.0a1 - 90.0.2 Removed support for FTP. On Windows, updates will now install in the background, even when Firefox is not currently running.
Mozilla Firefox 91.x 91.0a1 - 91.0.2, 91.3.0esr (ESR) Removed ability to disable Proton. Last version to work correctly on Windows 10X.
Mozilla Firefox 92.x 92.0a1 - 92.0.1
Mozilla Firefox 93.x 93.0a1 - 93.0 Added support for the AVIF format. On Windows, when the available system memory becomes insufficient, Firefox automatically disloads rarely used tabs. Disabled downloads from http-based addresses.
Mozilla Firefox 94.x 94.0a1 - 94.0.2 On macOS, Firefox now uses the Energy Saving Mode for full screen videos on YouTube and Twitch. On Windows, Firefox no longer notifies the user of an update to speed up installation. Introduced Site Isolation (previously codenamed Fission) and support for the Snap Layout feature in Windows 11. The Add-On "Firefox Multi-Account Containers" is now installed by default. New page about:unloads where the user can set tabs to hibernate. This is the first version to be offered at the Microsoft Store for Windows and as a MSIX installer. Revision 2 corrected bugs relating to the MSIX-packed edition.

Gallery[edit | edit source]

References[edit | edit source]