This is the version history of the Firefox web browser.
The tables below are in chronological order by release number, so the tables near the bottom contain the oldest still-supported versions, the latest supported test versions, and the most remote future planned releases.
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Codename | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|---|
Phoenix | 0.1 | Pescadero | September 23, 2002 | First release.[2]
Gecko version 1.2
|
0.2 | Santa Cruz | October 1, 2002 | Official version 0.2 release.[3]
| |
0.3 | Lucia | October 14, 2002 | Official version 0.3 release.[4]
| |
0.4 | Oceano | October 19, 2002 | Official version 0.4 release.[5]
Gecko version 1.3
| |
0.5 | Naples | December 7, 2002 | Official version 0.5 release.[6]
| |
Firebird | 0.6 | Glendale | May 17, 2003 | Official version 0.6 release.[7]
Gecko version 1.5
|
0.6.1 | July 28, 2003 | Bugfix release.[8] | ||
0.7 | Indio | October 15, 2003 | Technology Preview.[9]
| |
0.7.1 | Three Kings | October 26, 2003 | Bugfix release for Mac OS X only.[11] | |
Firefox | 0.8 | Royal Oak | February 9, 2004 | Technology Preview.[12]
Gecko version 1.6
|
0.9 | One Tree Hill | June 15, 2004 | Technology Preview.[13]
Gecko version 1.7
| |
0.9.1 | June 28, 2004 | Bugfix release
| ||
0.9.2 | July 8, 2004 | Vulnerability patch for Windows only.[14] | ||
0.9.3 | August 4, 2004 | Vulnerability patch.[15] | ||
0.10 | Greenlane | September 14, 2004 | Bugs with higher complexity/risk, localization impact, RSS/Atom feed support, find toolbar, plugin finder.[16] | |
0.10.1 | October 1, 2004 | Vulnerability patch.[17] | ||
Firefox 1 | 1.0 | Phoenix | November 9, 2004 | Official version 1.0 release.[18]
|
1.0.1 | Rose & Crown | February 24, 2005 | Regular security and stability update.[19] | |
1.0.2 | March 23, 2005 | Regular security and stability update.[20] | ||
1.0.3 | April 15, 2005 | Regular security and stability update.
| ||
1.0.4 | May 11, 2005 | Regular security and stability update.[22]
| ||
1.0.5 | July 12, 2005 | Regular security and stability update.[23] | ||
1.0.6 | July 19, 2005 | Off-cycle stability update.[24]
| ||
1.0.7 | September 20, 2005 | Regular security and stability update.[25] | ||
1.0.8 | April 13, 2006 | Regular security and stability update.[26] End-of-life 1.0.x product line
| ||
Firefox 1.5 | ||||
1.5 | Deer Park | November 29, 2005 | Official version 1.5 release.[27]
Official localized builds. Gecko version 1.8
Changes during alphas
Changes during betas | |
1.5.0.1 | February 1, 2006 | Regular security and stability update.[32] | ||
1.5.0.2 | April 13, 2006 | Regular security and stability update.[33]
| ||
1.5.0.3 | May 2, 2006 | Off-cycle security update.[34] | ||
1.5.0.4 | June 1, 2006 | Regular security and stability update.[35] | ||
1.5.0.5 | July 26, 2006 | Regular security and stability update.[36]
| ||
1.5.0.6 | August 2, 2006 | Off-cycle security and stability update.[37]
| ||
1.5.0.7 | September 14, 2006 | Regular security and stability update.[38] | ||
1.5.0.8 | November 7, 2006 | Regular security and stability update.[39] | ||
1.5.0.9 | December 19, 2006 | Regular security and stability update.[40] | ||
1.5.0.10 | February 23, 2007 | Regular security and stability update.[41] | ||
1.5.0.11 | March 20, 2007 | Regular security and stability update. Regression fixes.[42] | ||
1.5.0.12 | May 30, 2007 | Regular security and stability update. [43] End-of-life 1.5.0.x product line
| ||
Firefox 2 | ||||
2.0 | Bon Echo | October 24, 2006 | Official version 2.0 release.[44]
Official localized builds. Gecko version 1.8.1
Changes during alphas"[45]
Changes during betas
| |
2.0.0.1 | December 19, 2006 | Regular security and stability update. Windows Vista support.[50] | ||
2.0.0.2 | February 23, 2007 | Regular security and stability update.[51] | ||
2.0.0.3 | March 20, 2007 | Regular security and stability update. Regression fixes and security fixes.[52] | ||
2.0.0.4 | May 30, 2007 | Regular security and stability update.[53] | ||
2.0.0.5 | July 17, 2007 | Security and stability update.[54] | ||
2.0.0.6 | July 30, 2007 | Regular security and stability update.[55] | ||
2.0.0.7 | September 18, 2007 | Off-cycle security update.[56] | ||
2.0.0.8 | October 18, 2007 | Regular security and stability update. Mac OS X 10.5 support.[57] | ||
2.0.0.9 | November 1, 2007 | Off-cycle security and stability update.[58] | ||
2.0.0.10 | November 26, 2007 | Off-cycle security and stability update.[59] | ||
2.0.0.11 | November 30, 2007 | Off-cycle stability update.[60] | ||
2.0.0.12 | February 7, 2008 | Regular security and stability update.[61] | ||
2.0.0.13 | March 25, 2008 | Regular security and stability update.[62] | ||
2.0.0.14 | April 16, 2008 | Off-cycle stability update.[63] | ||
2.0.0.15 | July 1, 2008 | Regular security and stability update.[64] | ||
2.0.0.16 | July 15, 2008 | Off-cycle security update.[65] | ||
2.0.0.17 | September 23, 2008 | Regular security and stability update.[66] | ||
2.0.0.18 | November 12, 2008 | Regular security and stability update.[67] | ||
2.0.0.19 | December 16, 2008 | Regular security and stability update.[68] | ||
2.0.0.20 | December 18, 2008 | Off-cycle security update.[69]
| ||
Firefox 3 | ||||
3.0 | Gran Paradiso | June 17, 2008 | Official version 3.0 release.[70]
Gecko version 1.9
Changes during alphas
Changes during betas
| |
3.0.1 | July 16, 2008 | Security and stability update.[83] | ||
3.0.2 | September 23, 2008 | Regular security and stability update.[84] | ||
3.0.3 | September 26, 2008 | Bug fix for retrieving and saving passwords.[85] | ||
3.0.4 | November 12, 2008 | Regular security and stability update.[86] | ||
3.0.5 | December 16, 2008 | Regular security and stability update.[87] | ||
3.0.6 | February 3, 2009 | Regular security and stability update.[88] | ||
3.0.7 | March 4, 2009 | Regular security and stability update.[89] | ||
3.0.8 | March 27, 2009 | Off-cycle security update.[90] | ||
3.0.9 | April 21, 2009 | Regular security and stability update.[91] | ||
3.0.10 | April 27, 2009 | Off-cycle stability update.[92] | ||
3.0.11 | June 11, 2009 | Regular security and stability update.[93] | ||
3.0.12 | July 21, 2009 | Regular security and stability update.[94] | ||
3.0.13 | August 3, 2009 | Regular security and stability update.[95] | ||
3.0.14 | September 9, 2009 | Regular security and stability update.[96] | ||
3.0.15 | October 27, 2009 | Regular security and stability update.[97] | ||
3.0.16 | December 15, 2009 | Regular security and stability update.[98] | ||
3.0.17 | January 5, 2010 | Off-cycle stability update.[99] | ||
3.0.18 | February 17, 2010 | Regular security and stability update.[100] | ||
3.0.19 | March 30, 2010 | Regular security and stability update.[101]
| ||
Firefox 3.5 | 3.5[102] | Shiretoko | June 30, 2009 | Official version 3.5 release.
Gecko version 1.9.1
Changes during alphas
Changes during betas
|
3.5.1 | July 16, 2009 | Off-cycle security and stability update.[105] | ||
3.5.2 | August 3, 2009 | Regular security and stability update.[106] | ||
3.5.3 | September 9, 2009 | Regular security and stability update.[107] | ||
3.5.4 | October 27, 2009 | Regular security and stability update.[108] | ||
3.5.5 | November 5, 2009 | Off-cycle security and stability update.[109] | ||
3.5.6 | December 15, 2009 | Regular security and stability update.[110] | ||
3.5.7 | January 5, 2010 | Off-cycle stability update.[111] | ||
3.5.8 | February 17, 2010 | Regular security and stability update.[112] | ||
3.5.9 | March 30, 2010 | Regular security and stability update.[113] | ||
3.5.10 | June 22, 2010 | Regular security and stability update.[114] | ||
3.5.11 | July 20, 2010 | Regular security and stability update.[115] | ||
3.5.12 | September 7, 2010 | Regular security and stability update.[116] | ||
3.5.13 | September 15, 2010 | Off-cycle stability update.[117] | ||
3.5.14 | October 19, 2010 | Regular security and stability update.[118] | ||
3.5.15 | October 27, 2010 | Off-cycle security update.[119] | ||
3.5.16 | December 9, 2010 | Regular security and stability update.[120] | ||
3.5.17 | March 1, 2011 | Regular security and stability update.[121] | ||
3.5.18 | March 22, 2011 | Off-cycle security update.
| ||
3.5.19 | April 28, 2011 | Regular security and stability update.
| ||
Firefox 3.6 | 3.6 | Namoroka | January 21, 2010 | Official Firefox 3.6 release.[124]
Gecko version 1.9.2
Changes during alphas
Changes during betas
|
There was no version 3.6.1. | ||||
3.6.2 | March 22, 2010 | Security and stability update.[130] | ||
3.6.3 | April 1, 2010 | Quick turn-around security update.[131] | ||
3.6.3plugin1 | Lorentz | April 8, 2010 | First Firefox "Lorentz" beta, followed by 7 more Firefox 3.6.4 pre-release builds, all codenamed "Lorentz".[132] | |
3.6.4 (OOPP) | Lorentz | June 22, 2010 | Regular security and stability update, including OOPP.[133] | |
There was no version 3.6.5. | ||||
3.6.6 | June 26, 2010 | Off-cycle stability update. Modified crash protection feature to increase amount of time plugins allowed to be non-responsive before being terminated.[134] | ||
3.6.7 | July 20, 2010 | Regular security and stability update.[135] | ||
3.6.8 | July 23, 2010 | Off-cycle stability update.[136] | ||
3.6.9 | September 7, 2010 | Regular security and stability update. Also added support for X-FRAME-OPTIONS HTTP response header to help prevent clickjacking and removed option to enable experimental HTML5 parser via user preference html5.enable in about:config.[137]
| ||
3.6.10 | September 15, 2010 | Off-cycle stability update.[138] | ||
3.6.11 | October 19, 2010 | Regular security and stability update.[139] | ||
3.6.12 | October 27, 2010 | Off-cycle security update.[140] | ||
3.6.13 | December 9, 2010 | Regular security and stability update.[141] | ||
3.6.14 | March 1, 2011 | Regular security and stability update.[142] | ||
3.6.15 | March 4, 2011 | Off-cycle stability update. Fixed issue where some Java applets failed to load in Firefox 3.6.14.[143] | ||
3.6.16 | March 22, 2011 | Off-cycle security update. Blacklisted several invalid HTTPS certificates.[144] | ||
3.6.17 | April 28, 2011 | Regular security and stability update.[145] | ||
3.6.18 | June 21, 2011 | Regular security and stability update.[146] | ||
3.6.19 | July 11, 2011 | Off-cycle stability update. Turned off downloadable font support for users running Mac OS X 10.7 due to an underlying platform bug. No changes made on Windows side.[147] | ||
3.6.20 | August 16, 2011 | Regular security and stability update.[148] | ||
3.6.21 | August 30, 2011 | Off-cycle security update. Blacklisted a compromised HTTPS certificate.[149] | ||
3.6.22 | September 6, 2011 | Off-cycle security update.[150] | ||
3.6.23 | September 27, 2011 | Regular security and stability update.[151] | ||
3.6.24 | November 8, 2011 | Regular security and stability update.[152] | ||
3.6.25 | December 20, 2011 | Regular security and stability update.[153] | ||
3.6.26 | January 31, 2012 | Regular security and stability update.[154] | ||
3.6.27 | February 17, 2012 | Off-cycle security update.[155] | ||
3.6.28 | March 13, 2012 | Regular security and stability update.
End-of-life 3.6.x product line on April 24, 2012. | ||
Firefox 4 | 4.0 | Tumucumaque | March 22, 2011 | Official Firefox 4.0 release.[158]
Gecko version 1.9.3
Changes during alphas
Changes during betas
Changes during release candidates |
4.0.1 | Macaw | April 28, 2011 | Regular security and stability update.[178]
End-of-life 4.0.x product line on June 21, 2011. |
From now on, Gecko version numbering is same as Firefox build version number, starting 5.0 on Firefox 5. The alpha releases have been renamed to Aurora.
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 5 | 5.0 | June 21, 2011 | Official Firefox 5.0 release.[179]
|
5.0.1 | July 11, 2011 | Off-cycle stability update for Mac OS X only.
End-of-life 5.0.x product line on August 16, 2011. | |
Firefox 6 | 6.0 | August 16, 2011 | Official Firefox 6.0 release.[189]
|
6.0.1 | August 30, 2011 | Off-cycle security update.
| |
6.0.2 | September 6, 2011 | Off-cycle security update.[191]
End-of-life 6.0.x product line on September 27, 2011. | |
Firefox 7 | 7.0 | September 27, 2011 | Official Firefox 7.0 release.[192]
|
7.0.1 | September 29, 2011 | Off-cycle security and stability update.[193]
End-of-life 7.0.x product line on November 8, 2011. | |
Firefox 8 | 8.0 | November 8, 2011 | Official Firefox 8.0 release.[194]
Changes during betas
|
8.0.1 | November 21, 2011 | Off-cycle security and stability update.[195]
End-of-life 8.0.x product line on December 20, 2011. | |
Firefox 9 | 9.0 | December 20, 2011 | Official Firefox 9.0 release.[196]
|
9.0.1 | December 21, 2011 | Off-cycle security and stability update.[197]
End-of-life 9.0.x product line on January 31, 2012. |
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 10 | 10.0 | January 31, 2012 | Official Firefox 10.0 release.[198] First Extended Support Release (ESR).[199]
|
10.0esr | |||
10.0.1 | February 10, 2012 | Off-cycle security and stability update.[200] | |
10.0.1esr | |||
10.0.2 | February 16, 2012 | Off-cycle security and stability update.[201]
End-of-life 10.0.x product line on March 13, 2012. | |
10.0.2esr | |||
10.0.3esr | March 13, 2012 | Regular security and stability update.[202]
| |
10.0.4esr | April 24, 2012 | Regular security and stability update.[204]
| |
10.0.5esr | June 5, 2012 | Regular security and stability update.[205]
| |
10.0.6esr | July 17, 2012 | Regular security and stability update.[206]
| |
10.0.7esr | August 28, 2012 | Regular security and stability update.[207]
| |
10.0.8esr | October 9, 2012 | Regular security and stability update.[208] | |
10.0.9esr | October 12, 2012 | Off-cycle security update.[209] | |
10.0.10esr | October 26, 2012 | Off-cycle security update.[210] | |
10.0.11esr | November 20, 2012 | Off-cycle security update.[211] | |
10.0.12esr | January 8, 2013 | Regular security update.[212] End-of-life 10.0.x ESR product line on February 19, 2013. | |
Firefox 11 | 11.0 | March 13, 2012 | Official Firefox 11.0 release.[213]
End-of-life 11.0.x product line on April 24, 2012. |
Firefox 12 | 12.0 | April 24, 2012 | Official Firefox 12.0 release.[214]
End-of-life 12.0.x product line on June 5, 2012. |
Firefox 13 | 13.0 | June 5, 2012 | Official Firefox 13.0 release.[216]
|
13.0.1 | June 15, 2012 | Off-cycle security and stability update.[217]
End-of-life 13.0.x product line on July 17, 2012. | |
Firefox 14 | 14.0 | June 26, 2012 | Android
Official Firefox Mobile 14.0 release. [218][219]
|
14.0.1 | July 17, 2012 | Desktop
Official Firefox Desktop 14.0 release.[220]
End-of-life 14.0.x product line on August 28, 2012. | |
Firefox 15 | 15.0 | August 28, 2012 | Official Firefox 15.0 release.[221]
|
15.0.1 | September 6, 2012 | Off-cycle stability update.[222]
End-of-life 15.0.x product line on October 9, 2012. | |
Firefox 16 | 16.0 | October 9, 2012 | Official Firefox 16.0 release.[223]
|
16.0.1 | October 11, 2012 | Off-cycle security and stability update.[224] | |
16.0.2 | October 26, 2012 | Off-cycle security and stability update.[225]
End-of-life 16.0.x product line on November 20, 2012. | |
Firefox 17 | 17.0 | November 20, 2012 | Official Firefox 17.0 release.[226]
|
17.0esr | November 20, 2012 | Official Firefox 17.0 Extended Support Release (ESR). | |
17.0.1 | November 30, 2012 | Off-cycle stability update.[227]
End-of-life 17.0.x product line on January 8, 2013. | |
17.0.1esr | November 30, 2012 | Off-cycle stability update. | |
17.0.2esr | January 8, 2013 | Regular security and stability updates.
| |
17.0.3esr | February 19, 2013 | Regular security update.[229] | |
17.0.4esr | March 7, 2013 | Regular security update.[230] | |
17.0.5esr | April 2, 2013 | Regular security update.[231] | |
17.0.6esr | May 10, 2013 | Regular security update.[232] | |
17.0.7esr | June 25, 2013 | Regular security update.[233] | |
17.0.8esr | August 6, 2013 | Regular security update.[234] | |
17.0.9esr | September 17, 2013 | Regular security update.[235] | |
17.0.10esr | October 29, 2013 | Regular security update.[236] | |
17.0.11esr | November 15, 2013 | Off-cycle stability update.[237]
End-of-life 17.0.x ESR product line on December 10, 2013. | |
Firefox 18 | 18.0 | January 8, 2013 | Official Firefox 18.0 release.[238]
Changes during Aurora releases
|
18.0.1 | January 18, 2013 | Off-cycle stability update.[239]
| |
18.0.2 | February 5, 2013 | Off-cycle stability update.[240] End-of-life 18.0.x product line on February 19, 2013. | |
Firefox 19 | 19.0 | February 19, 2013 | Official Firefox 19.0 release.[241]
|
19.0.1 | February 27, 2013 | Off-cycle stability update.[242]
| |
19.0.2 | March 7, 2013 | Off-cycle security update.[243]
End-of-life 19.0.x product line on April 2, 2013. |
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 20 | 20.0 | April 2, 2013 | Official Firefox 20.0 release.[244]
|
20.0.1 | April 11, 2013 | Off-cycle security update.[245]
End-of-life 20.0.x product line on May 14, 2013. | |
Firefox 21 | 21.0 | May 14, 2013 | Official Firefox 21.0 release.[246]
End-of-life 21.0.x product line on June 25, 2013. |
Firefox 22 | 22.0 | June 25, 2013 | Official Firefox 22.0 release.[247]
End-of-life 22.0.x product line on August 6, 2013. |
Firefox 23 | 23.0 | August 6, 2013 | Official Firefox 23.0 release.[248]
In this Version Mozilla changed the Firefox Logo.
|
23.0.1 | August 16, 2013 | Off-cycle stability update.[249]
End-of-life 23.0.x product line on September 17, 2013. | |
Firefox 24 | 24.0 | September 17, 2013 | Official Firefox 24.0 release.[250]
End-of-life 24.0.x product line on October 29, 2013. |
24.0esr | September 17, 2013 | Official Firefox 24.0 Extended Support Release (ESR).[251] | |
24.1.0esr | October 29, 2013 | Regular security update.[252] | |
24.1.1esr | November 15, 2013 | Off-cycle stability update.[253]
| |
24.2.0esr | December 10, 2013 | Regular security update.[254] | |
24.3.0esr | February 4, 2014 | Regular security update.[255] | |
24.4.0esr | March 18, 2014 | Regular security update.[256] | |
24.5.0esr | April 29, 2014 | Regular security update.[257] | |
24.6.0esr | June 10, 2014 | Regular security update.[258] | |
24.7.0esr | July 22, 2014 | Regular security update.[259] | |
24.8.0esr | September 2, 2014 | Regular security update.[260] | |
24.8.1esr | September 24, 2014 | Off-cycle security update.[261] End-of-life 24.x.x ESR product line on October 14, 2014. | |
Firefox 25 | 25.0 | October 29, 2013 | Official Firefox 25.0 release.[262]
|
25.0.1 | November 15, 2013 | Off-cycle security and stability update.[263]
End-of-life 25.0.x product line on December 10, 2013. | |
Firefox 26 | 26.0 | December 10, 2013 | Official Firefox 26.0 release.[264]
|
26.0.1 | December 20, 2013 | Off-cycle stability mobile release.[265]
End-of-life 26.0.x product line on February 4, 2014. | |
Firefox 27 | 27.0 | February 4, 2014 | Official Firefox 27.0 release.
|
27.0.1 | February 13, 2014 | Off-cycle stability release.[266]
End-of-life 27.0.x product line on March 18, 2014. | |
Firefox 28 | 28.0 | March 18, 2014 | Official Firefox 28.0 release.[citation needed]
|
28.0.1 | March 24, 2014 | Android
Off-cycle stability mobile update.[267]
End-of-life 28.0.x product line on April 29, 2014. | |
Firefox 29 | 29.0 | April 29, 2014 | Official Firefox 29.0 release.[citation needed]
|
29.0.1 | May 9, 2014 | Off-cycle stability update.[268]
End-of-life 29.0.x product line on June 10, 2014. |
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 30 | 30.0 | June 10, 2014 | Official Firefox 30.0 release.[citation needed]
End-of-life 30.0.x product line on July 22, 2014. |
Firefox 31 | 31.0 | July 22, 2014 | Official Firefox 31.0 release.[citation needed]
End-of-life 31.0.x product line on September 2, 2014. |
31.0esr | July 22, 2014 | Official Firefox 31.0 Extended Support Release (ESR).[251] | |
31.1.0esr | September 2, 2014 | Regular security update.[269] | |
31.1.1esr | September 24, 2014 | Off-cycle security update.[270] | |
31.2.0esr | October 14, 2014 | Regular security and stability update.[271]
| |
31.3.0esr | December 1, 2014 | Regular security and stability update.[272]
| |
31.4.0esr | January 13, 2015 | Regular security update.[273] | |
31.5.0esr | February 24, 2015 | Regular security update.[274] | |
31.5.2esr | March 20, 2015 | Off-cycle security update.[275] | |
31.5.3esr | March 21, 2015 | Off-cycle security update.[276] | |
31.6.0esr | March 31, 2015 | Regular security update.[277] | |
31.7.0esr | May 12, 2015 | Regular security update.[278] | |
31.8.0esr | July 2, 2015 | Regular security update.[279] End-of-life 31.x.x ESR product line on August 11, 2015. | |
Firefox 32 | 32.0 | September 2, 2014 | Official Firefox 32.0 release.[citation needed]
|
32.0.1 | September 9, 2014 (Android) September 12, 2014 (desktop) |
Off-cycle stability update.[280]
| |
32.0.2 | September 18, 2014 | Desktop
Off-cycle stability update.[281]
| |
32.0.3 | September 24, 2014 | Off-cycle security update.[282] End-of-life 32.0.x product line on October 14, 2014. | |
Firefox 33 | 33.0 | October 14, 2014 | Official Firefox 33.0 release.[283]
|
33.0.1 | October 24, 2014 | Desktop
Off-cycle stability update.[284]
| |
33.0.2 | October 28, 2014 | Desktop
Off-cycle stability update.[285]
| |
33.0.3 | November 6, 2014 | Desktop
Off-cycle stability update.[286]
| |
33.1 | November 10, 2014 | Firefox's 10-year anniversary.[287][288]
| |
33.1.1 | November 14, 2014 | Desktop
Off-cycle stability update.[289]
End-of-life 33.x product line on December 1, 2014. | |
Firefox 34 | 34.0 | December 1, 2014 | Official Firefox 34.0 release.[citation needed]
|
34.0.5 | December 1, 2014 | Desktop
Official Firefox 34.0.5 release.[citation needed]
End-of-life 34.0.x product line on January 13, 2015. | |
Firefox 35 | 35.0 | January 13, 2015 | Official Firefox 35.0 release.[290]
Changes during Developer Edition releases |
35.0.1 | January 26, 2015 (desktop) February 2, 2015 (Android) |
Off-cycle stability update.[293][citation needed]
End-of-life 35.0.x product line on February 24, 2015. | |
Firefox 36 | 36.0 | February 24, 2015 (desktop) February 27, 2015 (Android) |
Official Firefox 36.0 release.[citation needed]
|
36.0.1 | March 5, 2015 (desktop) March 6, 2015 (Android) |
Off-cycle stability update.[294]
| |
36.0.2 | March 16, 2015 | Android
Off-cycle stability mobile update.[295]
| |
36.0.3 | March 20, 2015 | Off-cycle security update.[296][citation needed]
| |
36.0.4 | March 21, 2015 | Off-cycle security update.[297][citation needed]
End-of-life 36.0.x product line on March 31, 2015. | |
Firefox 37 | 37.0 | March 31, 2015 | Official Firefox 37.0 release.[citation needed]
|
37.0.1 | April 3, 2015 | Off-cycle stability and security update.[298]
| |
37.0.2 | April 14, 2015 (Android) April 20, 2015 (desktop) |
Off-cycle stability and security update.[299][citation needed]
End-of-life 37.0.x product line on May 12, 2015. | |
Firefox 38 | 38.0 | May 12, 2015 | Official Firefox 38.0 release.[citation needed]
|
38.0esr | May 12, 2015 | Official Firefox 38.0 Extended Support Release (ESR).[251] | |
38.0.1 | May 14, 2015 (desktop) May 15, 2015 (Android) |
Off-cycle stability update.[300][citation needed]
| |
38.0.1esr | May 14, 2015 | Off-cycle stability update.[300] | |
38.0.5 | June 2, 2015 | Official Firefox 38.0.5 release.[301][citation needed]
End-of-life 38.0.x product line on July 2, 2015. | |
38.0.6 | June 9, 2015 | Off-cycle update.
Note: This release is only available from the Mozilla archives. End-of-life 38.0.x product line on July 2, 2015. | |
38.1.0esr | July 2, 2015 | Regular security update.[302] | |
38.1.1esr | August 6, 2015 | Off-cycle security update.[citation needed]
| |
38.2.0esr | August 11, 2015 | Regular security and stability update.[304]
| |
38.2.1esr | August 27, 2015 | Off-cycle security update.[305] | |
38.3.0esr | September 22, 2015 | Regular security update.[306] | |
38.4.0esr | November 3, 2015 | Regular security update.[307] | |
38.5.0esr | December 15, 2015 | Regular security update.[308]
| |
38.5.1esr | December 21, 2015 | Off-cycle stability update.[309]
| |
38.5.2esr | December 22, 2015 | Off-cycle security and stability update.[310]
| |
38.6.0esr | January 26, 2016 | Regular security update.[311] | |
38.6.1esr | February 11, 2016 | Off-cycle graphite2 library update.[312]
| |
38.7.0esr | March 8, 2016 | Regular security update.[313] | |
38.7.1esr | March 16, 2016 | Off-cycle stability update.[314]
| |
38.8.0esr | April 26, 2016 | Regular security update.[315] End-of-life 38.x.x ESR product line on June 7, 2016. | |
Firefox 39 | 39.0 | July 2, 2015 | Official Firefox 39.0 release.[316]
|
39.0.3 | August 6, 2015 | Off-cycle security update.[citation needed]
End-of-life 39.0.x product line on August 11, 2015. |
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 40 | 40.0 | August 11, 2015 | Official Firefox 40.0 release.
|
40.0.2 | August 13, 2015 | Off-cycle stability update.[317]
| |
40.0.3 | August 27, 2015 | Off-cycle stability and security update.[318]
End-of-life 40.0.x product line on September 22, 2015. | |
Firefox 41 | 41.0 | September 22, 2015 | Official Firefox 41.0 release.[citation needed]
|
41.0.1 | September 30, 2015 | Desktop
Off-cycle stability update.[319]
| |
41.0.2 | October 15, 2015 | Off-cycle security update.[320] End-of-life 41.0.x product line on November 3, 2015. | |
Firefox 42 | 42.0 | November 3, 2015 | Official Firefox 42.0 release.[citation needed]
End-of-life 42.0.x product line on December 15, 2015. |
Firefox 43 | 43.0 | December 15, 2015 | Official Firefox 43.0 release.[citation needed]
|
43.0.1 | December 18, 2015 | Desktop
Off-cycle stability update.[321]
| |
43.0.2 | December 22, 2015 | Desktop
Off-cycle security and stability update.[322]
| |
43.0.3 | December 28, 2015 | Desktop
Off-cycle stability update.[323]
| |
43.0.4 | January 6, 2016 | Desktop
Off-cycle stability update.[324]
End-of-life 43.0.x product line on January 26, 2016. | |
Firefox 44 | 44.0 | January 26, 2016 | Official Firefox 44.0 release.[325] This release has the cookie confirmation dialog removed.[326]
Changes during Nightly releases
|
44.0.1 | February 8, 2016 | Desktop
Off-cycle stability update.[327]
| |
44.0.2 | February 11, 2016 | Off-cycle security and stability update.[328]
End-of-life 44.0.x product line on March 8, 2016. | |
Firefox 45 | 45.0 | March 8, 2016 | Official Firefox 45.0 release.[citation needed]
|
45.0.1 | March 16, 2016 | Off-cycle stability update.[329] | |
45.0.2 | April 11, 2016 | Off-cycle stability update.[330]
End-of-life 45.0.x product line on April 26, 2016. | |
45.0esr | March 8, 2016 | Official Firefox 45.0 Extended Support Release (ESR). | |
45.0.1esr | March 16, 2016 | Off-cycle stability update.[329]
| |
45.0.2esr | April 11, 2016 | Off-cycle stability update.[330]
| |
45.1.0esr | April 26, 2016 | Regular security and stability update.[331] | |
45.1.1esr | May 3, 2016 | Off-cycle stability update.[332]
| |
45.2.0esr | June 7, 2016 | Regular security and stability update.[333]
| |
45.3.0esr | August 2, 2016 | Regular security and stability update.[334] | |
45.4.0esr | September 20, 2016 | Regular security update.[335] | |
45.5.0esr | November 15, 2016 | Regular security update.[336] | |
45.5.1esr | November 30, 2016 | Off-cycle security update.[337] | |
45.6.0esr | December 13, 2016 | Regular security update.[338] | |
45.7.0esr | January 24, 2017 | Regular security update.[339] | |
45.8.0esr | March 7, 2017 | Regular security update.[340] | |
45.9.0esr | April 19, 2017 | Regular security update.[341] End-of-life 45.x.x ESR product line on June 13, 2017. | |
Firefox 46 | 46.0 | April 26, 2016 | Official Firefox 46.0 release.
|
46.0.1 | May 3, 2016 | Off-cycle stability update.[342]
End-of-life 46.0.x product line on June 7, 2016. | |
Firefox 47 | 47.0 | June 7, 2016 | Official Firefox 47.0 release.[citation needed][citation needed]
|
47.0.1 | June 28, 2016 | Off-cycle stability update.[343]
| |
47.0.2 | November 1, 2016 | Off-cycle stability update.[344]
End-of-life 47.0.x product line on November 1, 2016. | |
Firefox 48 | 48.0 | August 2, 2016 | Official Firefox 48.0 release.[345]
|
48.0.1 | August 18, 2016 | Off-cycle stability update.[346]
| |
48.0.2 | August 24, 2016 | Off-cycle stability update.[347]
End-of-life 48.0.x product line on September 20, 2016. | |
Firefox 49 | 49.0 | September 20, 2016 | Official Firefox 49.0 release.[348]
|
49.0.1 | September 23, 2016 | Off-cycle stability update.[349]
| |
49.0.2 | October 20, 2016 | Off-cycle security and stability update.[350]
End-of-life 49.0.x product line on November 15, 2016. |
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 50 | 50.0 | November 15, 2016 | Official Firefox 50.0 release.[351][citation needed]
|
50.0.1 | November 28, 2016 | Off-cycle security and stability update.[352]
| |
50.0.2 | November 30, 2016 | Off-cycle security update.[353] | |
50.1.0 | December 13, 2016 | Regular security update.[354] End-of-life 50.x.x product line on January 24, 2017. | |
Firefox 51 | 51.0 | January 24, 2017 | Official Firefox 51.0 release.[355][citation needed]
|
51.0.1 | January 26, 2017 | Off-cycle security and stability update.[356]
| |
51.0.2 | February 6, 2017 | Android
Off-cycle stability update.[357]
| |
51.0.3 | February 9, 2017 | Android
Off-cycle stability update.[358]
End-of-life 51.0.x product line on March 7, 2017. | |
Firefox 52 | 52.0 | March 7, 2017 | Official Firefox 52.0 release.[359][360]
|
52.0.1 | March 17, 2017 | Off-cycle security update.[361]
| |
52.0.2 | March 28, 2017 | Off-cycle stability update.[362][363]
End-of-life 52.0.x product line on April 19, 2017. | |
52.0esr | March 7, 2017 | Official Firefox 52.0 Extended Support Release (ESR). | |
52.0.1esr | March 17, 2017 | Off-cycle security update.[361] | |
52.0.2esr | March 28, 2017 | Off-cycle stability update.[362] | |
52.1.0esr | April 19, 2017 | Regular security and stability update.[364]
| |
52.1.1esr | May 5, 2017 | Off-cycle security update.[365]
| |
52.1.2esr | May 19, 2017 | Off-cycle stability update.[366]
| |
52.2.0esr | June 13, 2017 | Regular security and stability update.[367]
| |
52.2.1esr | June 29, 2017 | Off-cycle stability update.[368]
| |
52.3.0esr | August 8, 2017 | Regular security and stability update.[369]
| |
52.4.0esr | September 28, 2017 | Regular security and stability update.[370]
| |
52.4.1esr | October 9, 2017 | Off-cycle stability update.[371]
| |
52.5.0esr | November 14, 2017 | Regular security and stability update.[372]
| |
52.5.2esr | December 7, 2017 | Off-cycle security update.[373]
| |
52.5.3esr | December 28, 2017 | Off-cycle stability update.[374]
| |
52.6.0esr | January 23, 2018 | Regular security and stability update.[375]
| |
52.7.0esr | March 13, 2018 | Regular security and stability update.[376]
| |
52.7.1esr | March 14, 2018 | Off-cycle stability update.[377]
| |
52.7.2esr | March 16, 2018 | Off-cycle security update.[378]
| |
52.7.3esr | March 26, 2018 | Off-cycle security update.[379]
| |
52.7.4esr | April 30, 2018 | Off-cycle stability update.[380]
| |
52.8.0esr | May 9, 2018 | Regular security and stability update.[381]
| |
52.8.1esr | June 6, 2018 | Off-cycle security update.[382]
| |
52.9.0esr | June 26, 2018 | Regular security update.[383]
End-of-life 52.x.x ESR product line on September 5, 2018. | |
Firefox 53 | 53.0 | April 19, 2017 | Official Firefox 53.0 release.[384][385]
|
53.0.1 | April 27, 2017 | Android
Off-cycle stability update.[386]
| |
53.0.2 | May 5, 2017 | Off-cycle security and stability update.[387]
| |
53.0.3 | May 19, 2017 | Desktop
Off-cycle stability update.[388]
End-of-life 53.0.x product line on June 13, 2017. | |
Firefox 54 | 54.0 | June 13, 2017 | Official Firefox 54.0 release.[389][390]
Changes during Developer Edition releases
|
54.0.1 | June 29, 2017 | Off-cycle stability update.[391][392]
End-of-life 54.0.x product line on August 8, 2017. | |
Firefox 55 | 55.0 | August 8, 2017 | Official Firefox 55.0 release.[393][394]
|
55.0.1 | August 10, 2017 | Off-cycle stability update.[396]
| |
55.0.2 | August 16, 2017 | Off-cycle stability update.[397][398]
| |
55.0.3 | August 25, 2017 | Off-cycle stability update.[399]
End-of-life 55.0.x product line on September 28, 2017. | |
Firefox 56 | 56.0 | September 28, 2017 | Official Firefox 56.0 release.[400][401]
|
56.0.1 | October 9, 2017 | Off-cycle stability update.[402]
| |
56.0.2 | October 26, 2017 | Off-cycle stability update.[403]
End-of-life 56.0.x product line on November 14, 2017. | |
Firefox 57 ("Quantum")[404] | 57.0 | November 14, 2017 | Official Firefox 57.0 release.[405][406]
|
57.0.1 | November 29, 2017 | Off-cycle security and stability update.[407][408]
| |
57.0.2 | December 7, 2017 | Off-cycle stability update.[409]
| |
57.0.3 | December 28, 2017 | Off-cycle stability update.[410]
| |
57.0.4 | January 4, 2018 | Off-cycle security update.[411][412]
End-of-life 57.0.x product line on January 23, 2018. | |
Firefox 58 | 58.0 | January 23, 2018 | Official Firefox 58.0 release.[413][414]
|
58.0.1 | January 29, 2018 | Off-cycle security and stability update.[415][416]
| |
58.0.2 | February 7, 2018 | Off-cycle stability update.[417][418]
End-of-life 58.0.x product line on March 13, 2018. | |
Firefox 59 | 59.0 | March 13, 2018 | Official Firefox 59.0 release.[419][420]
|
59.0.1 | March 16, 2018 | Off-cycle security update.[421][422]
| |
59.0.2 | March 26, 2018 | Off-cycle security and stability update.[423][424]
| |
59.0.3 | April 30, 2018 | Off-cycle stability update.[425]
End-of-life 59.0.x product line on May 9, 2018. |
Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications.
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 60 | 60.0 | May 9, 2018 | Official Firefox 60.0 release.[426][427]
|
60.0.1 | May 16, 2018 | Off-cycle stability update.[428][429]
| |
60.0.2 | June 6, 2018 | Off-cycle security and stability update.[430][431]
End-of-life 60.0.x product line[failed verification – see discussion] on June 26, 2018. | |
60.0esr | May 9, 2018 | Official Firefox 60.0 Extended Support Release (ESR).[432]
| |
60.0.1esr | May 16, 2018 | Off-cycle stability update[433]
| |
60.0.2esr | June 6, 2018 | Off-cycle security and stability update.[434]
| |
60.1.0esr | June 26, 2018 | Regular security and stability update.[435]
| |
60.2.0esr | September 5, 2018 | Regular security and stability update.[436]
| |
60.2.1esr | September 21, 2018 | Off-cycle security and stability update.[437]
| |
60.2.2esr | October 2, 2018 | Off-cycle security and stability update.[438]
| |
60.3esr | October 23, 2018 | Regular security and stability update.[439]
| |
60.4esr | December 11, 2018 | Regular security and stability update.[440]
| |
60.5esr | January 28, 2019 | Regular security update.[441]
| |
60.5.1esr | February 12, 2019 | Off-cycle security update.[442]
| |
60.5.2esr | February 22, 2019 | Off-cycle stability update.[443]
| |
60.6esr | March 19, 2019 | Regular security update.[444]
| |
60.6.1esr | March 22, 2019 | Off-cycle security update.[445]
End-of-life 60.x.x product line[failed verification – see discussion] on October 22, 2019. | |
60.7esr | May 14, 2019 | [446] | |
60.8esr | July 9, 2019 | [446] | |
60.9esr | September 3, 2019 | [446] | |
Firefox 61 | 61.0 | June 25, 2018 | Official Firefox 61.0 release.[447][448]
|
61.0.1 | July 5, 2018 | Off-cycle stability update.[449]
| |
61.0.2 | August 8, 2018 | Off-cycle stability update.[450][451]
End-of-life 61.0.x product line[failed verification – see discussion] on September 5, 2018. | |
Firefox 62 | 62.0 | September 5, 2018 | Official Firefox 62.0 release.[452][453]
|
62.0.1 | September 7, 2018 | Off-cycle stability update.[454]
| |
62.0.2 | September 21, 2018 | Off-cycle security and stability update.[455][456]
| |
62.0.3 | October 2, 2018 | Off-cycle security and stability update.[457][458]
End-of-life 62.0.x product line[failed verification – see discussion] on October 23, 2018. | |
Firefox 63 | 63.0 | October 23, 2018 | Official Firefox 63.0 release.[459][460]
|
63.0.1 | October 31, 2018 | Off-cycle stability update.[461]
| |
63.0.2 | November 7, 2018 | Off-cycle stability update.[462]
| |
63.0.3 | November 15, 2018 | Off-cycle stability update.[463]
End-of-life 63.0.x product line[failed verification – see discussion] on December 11, 2018. | |
Firefox 64 | 64.0 | December 11, 2018 | Official Firefox 64.0 release for desktop.[464]
|
64.0.1 | December 14, 2018 | Official Firefox 64.0 release for Android.[465]
| |
64.0.2 | January 9, 2019 | Off-cycle stability update.[466][467]
End-of-life 64.0.x product line[failed verification – see discussion] on January 29, 2019. | |
Firefox 65 | 65.0 | January 28, 2019 | Official Firefox 65.0 release.[468][469]
|
65.0.1 | February 12, 2019 | Off-cycle security and stability update.[470][471]
| |
65.0.2 | February 28, 2019 | Off-cycle stability update.[472]
End-of-life 65.0.x product line[failed verification – see discussion] on March 19, 2019. | |
Firefox 66 | 66.0 | March 19, 2019 | Official Firefox 66.0 release.[473][474]
|
66.0.1 | March 22, 2019 | Off-cycle security update.[475][476]
| |
66.0.2 | March 27, 2019 | Off-cycle stability update.[477][478]
| |
66.0.3 | April 10, 2019 | Off-cycle stability update.[479]
End-of-life 66.0.x product line[failed verification – see discussion] on May 14, 2019. | |
Firefox 67 | 67.0b1 | March 18, 2019 | First Firefox 67.0 Developer Edition build.[446] |
67.0b1 | March 18, 2019 | First Firefox 67.0 Beta release.[446] | |
67.0 | May 14, 2019 | Official Firefox 67.0 release.[446]
End-of-life 67.0.x product line[failed verification – see discussion] on July 9, 2019. | |
Firefox 68 | 68.0a1 | March 18, 2019 | First Firefox 68.0 Nightly build.[446] |
68.0b1 | May 13, 2019 | First Firefox 68.0 Developer Edition build.[446] | |
68.0b1 | May 13, 2019 | First Firefox 68.0 Beta release.[446] | |
68.0 | July 9, 2019 | Official Firefox 68.0 release.[446]
End-of-life 68.0.x product line[failed verification – see discussion] on September 3, 2019. | |
68.0esr | July 9, 2019 | Official Firefox 68.0 Extended Support Release (ESR).[446] | |
68.1esr | September 3, 2019 | [446] | |
68.2esr | October 22, 2019 | [446] | |
68.3esr | December 10, 2019 | [446] | |
Firefox 69 | 69.0a1 | May 13, 2019 | First Firefox 69.0 Nightly build.[446] |
69.0b1 | July 8, 2019 | First Firefox 69.0 Developer Edition build.[446] | |
69.0b1 | July 8, 2019 | First Firefox 69.0 Beta release.[446] | |
69.0 | September 3, 2019 | Official Firefox 69.0 release.[446]
End-of-life 69.0.x product line[failed verification – see discussion] on October 22, 2019. |
Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications.
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Browser name | Version | Release date[1] | Release type and highlights[t 1] |
---|---|---|---|
Firefox 70 | 70.0a1 | July 8, 2019 | First Firefox 70.0 Nightly build.[446] |
70.0b1 | September 2, 2019 | First Firefox 70.0 Developer Edition build.[446] | |
70.0b1 | September 2, 2019 | First Firefox 70.0 Beta release.[446] | |
70.0 | October 22, 2019 | Official Firefox 70.0 release.[446]
End-of-life 70.0.x product line[failed verification – see discussion] on December 10, 2019. | |
Firefox 71 | 71.0a1 | September 2, 2019 | First Firefox 71.0 Nightly build.[446] |
71.0b1 | October 21, 2019 | First Firefox 71.0 Developer Edition build.[446] | |
71.0b1 | October 21, 2019 | First Firefox 71.0 Beta release.[446] | |
71.0 | December 10, 2019 | Official Firefox 71.0 release.[446] | |
Firefox 72 | 72.0a1 | October 21, 2019 | First Firefox 72.0 Nightly build.[446] |
72.0b1 | December 9, 2019 | First Firefox 72.0 Developer Edition build.[446] | |
72.0b1 | December 9, 2019 | First Firefox 72.0 Beta release.[446] | |
Firefox 73 | 73.0a1 | December 9, 2019 | First Firefox 73.0 Nightly build.[446] |
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Native 64-bit builds are officially supported on Linux, macOS, and Windows (since version 42).[480][citation needed]
Mozilla made Firefox for 64-bit Linux a priority with the release of Firefox 4, labeling it as tier 1 priority.[citation needed][481] Since being labeled tier 1, Mozilla has been providing official 64-bit releases for its browser for Linux.[482][483] Vendor-backed 64-bit support has existed for Linux distributions such as Novell/SUSE Linux, Red Hat Enterprise Linux, and Ubuntu prior to Mozilla's 64-bit support, even though vendors were faced with the challenge of having to turn off the 64-bit JIT compiler due to its instability prior to Firefox 4.[484][485]
The official releases of Firefox for macOS are universal builds that include both 32-bit and 64-bit versions of the browser in one package, and have been this way since Firefox 4. A typical browsing session uses a combination of the 64-bit browser process and a 32-bit plugin process, because some popular plugins still are 32-bit.[486] As of April 19, 2017, Firefox 53 has dropped support for 32-bit macOS.[487]
The 32-bit and 64-bit versions of Windows can be used to run 32-bit Firefox.[citation needed] In late 2012, Mozilla announced 64-bit Windows builds would be stopped[488] but later reversed the decision.[489] As of April 2015[update], 64-bit Windows builds are available as 38.0 Beta[490] and newer. 64-bit builds for Windows are officially supported as of November 2015 with the release of Firefox 42. All NPAPI plugins except Adobe Flash Player are blacklisted and unsupported on both 32-bit and 64-bit versions.[491]
Besides x86, Firefox also supported other CPU architectures including ARMv7, SPARC, PowerPC, and 68k on different tiers.[492] Mozilla terminated support for PowerPC-based Macintosh computers with Firefox 3.6, but a third-party project known as TenFourFox ported several newer versions of Firefox, the latest being based on Firefox 45 ESR.