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Firefox

Mozilla Firefox is an open-source web browser developed by Mozilla.

Firefox is available for Windows, macOS, Linux, and Android.

Firefox has been the second most popular web browser since January, 2018.

Firefox uses the Gecko rendering engine.

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Firefox Statistics

The values below are in percentages and are extracted from our W3Schools' Statistics.

2020 Total FF80 FF79 FF78 FF77 FF76 FF75 FF74 FF73 FF72 Older
August 7.3 0.8 4.7 0.4 0.1 0.1 0.0 0.0 0.0 0.1 1.1
July 7.6   0.4 4.8 1.0 0.1 0.0 0.0 0.0 0.2 1.1
June 8.1     0.3 5.1 1.2 0.1 0.1 0.1 0.1 1.1
May 8.5       0.3 5.0 2.0 0.2 0.0 0.1 0.9
April 8.6         0.3 4.6 2.4 0.2 0.1 1.0
March 8.7           0.2 3.9 2.9 0.4 1.3
February 8.7             0.3 2.7 4.3 1.4
January 9.1               0.3 4.8 4.0
2019 Total FF72 FF71 FF70 FF69 FF68 FF67 FF66 FF65 FF64 Older
December 9.0 0.4 4.7 2.0 0.2 0.5 0.1 0.1 0.1 0.1 0.8
November 9.2   0.4 6.7 0.4 0.5 0.1 0.1 0.1 0.1 0.8
October 9.4   0.2 1.5 5.5 0.4 0.1 0.1 0.0 0.1 1.5
September 9.1     0.4 5.0 1.7 0.2 0.2 0.1 0.0 1.5
August 9.2       0.4 6.7 0.3 0.2 0.1 0.1 1.4
July 9.3       0.3 3.9 3.0 0.3 0.2 0.1 1.5
June 9.4         0.5 6.6 0.4 0.1 0.1 1.7
May 9.5         0.2 1.9 5.4 0.2 0.1 1.7
April 9.6           0.5 6.8 0.4 0.2 1.7
March 9.6           0.2 1.7 5.6 0.2 1.0
February 10.0             0.5 6.4 1.2 1.9
January 10.2             0.1 0.6 7.1 2.4
2018 Total FF65 FF64 FF63 FF62 FF61 FF60 FF59 FF58 FF57 Older
December 10.1 0.3 3.3 3.8 0.2 0.2 0.6 0.1 0.0 0.1 1.5
November 10.2   0.5 6.9 0.5 0.3 0.6 0.1 0.1 0.1 1.5
October 10.1     1.5 6.1 0.4 0.6 0.1 0.1 0.1 1.2
September 10.3     0.5 5.0 2.4 0.5 0.1 0.1 0.1 1.6
August 10.6     0.1 0.5 7.7 0.3 0.2 0.1 0.1 1.6
July 10.8       0.7 6.7 1.4 0.2 0.1 0.2 1.5
June 10.9       0.1 0.7 7.6 0.3 0.1 0.2 1.9
May 10.9         0.4 4.0 4.1 0.2 0.2 2.0
April 11.2           0.5 7.8 0.4 0.3 2.2
March 11.5           0.3 3.8 4.7 0.5 2.2
February 11.8             0.7 7.5 0.9 2.7
January 12.4             0.2 1.5 7.8 2.9
2017 Total FF58 FF57 FF56 FF55 FF54 FF53 FF52 FF51 FF50 Older
December 12.4 0.7 8.9 0.4 0.2 0.2 0.1 0.7 0.1 0.1 1.0
November 12.5 0.4 4.1 4.7 0.3 0.2 0.1 0.9 0.1 0.1 1.6
October 12.1   0.6 7.1 1.9 0.4 0.2 0.8 0.1 0.1 0.9
September 12.8   0.1 0.6 8.0 0.8 0.2 0.8 0.1 0.1 2.1
August 13.1     0.3 2.6 6.9 0.3 1.0 0.1 0.2 1.7
July 13.3       0.6 9.0 0.4 1.0 0.2 0.2 1.9
June 13.3       0.2 3.6 6.5 0.8 0.2 0.2 1.8
May 13.6         0.6 8.9 0.9 0.2 0.3 2.7
April 13.6         0.3 2.2 7.5 0.5 0.3 2.8
March 14.1         0.1 0.3 5.3 4.5 0.4 3.5
February 15.0           0.1 0.7 9.5 1.1 3.6
January 15.4           0.2 2.9 8.9 3.4
2016 Total FF51 FF50 FF49 FF48 FF47 FF46 FF45 FF44 FF43 Older
December 15.5 0.6 10.3 0.7 0.4 0.7 0.2 1.4 0.3 0.3 0.6
November 15.3 0.3 4.0 7.1 0.5 0.8 0.2 0.8 0.4 0.2 1.0
October 15.7 0.1 0.5 10.0 1.1 1.1 0.2 0.8 0.2 0.4 1.3
September 16.3   0.2 2.4 8.2 1.8 0.3 0.8 0.3 0.4 1.9
August 16.8   0.2 0.6 4.8 7.3 0.4 0.8 0.4 0.4 1.9
July 17.1     0.1 0.9 11.7 0.5 0.9 0.4 0.4 2.2
June 17.0     0.1 0.5 7.5 4.5 0.9 0.4 0.5 3.6
May 16.9       0.1 0.7 9.6 2.5 0.6 0.6 2.8
April 17.5         0.2 1.0 11.5 1.2 0.7 2.9
March 17.8         0.1 0.6 5.2 7.1 1.0 3.8
February 18.6           0.2 0.8 8.8 4.6 4.2
January 18.8             0.2 1.4 12.8 4.4


2015 Total FF43 FF42 FF41 FF40 FF39 FF38 FF37 FF36 FF35 Older
December 19.1 4.8 9.3 0.6 0.5 0.4 1.3 0.2 0.1 0.2 2.3
November 19.2 0.7 9.9 4.2 0.8 0.5 1.2 0.2 0.1 0.2 1.4
October 20.0 0.2 0.8 12.7 2.1 0.6 1.3 0.3 0.2 0.3 1.5
September 20.6   0.2 1.9 13.3 1.1 1.4 0.3 0.2 0.4 1.8
August 21.2   0.1 0.6 6.8 7.7 1.2 0.8 0.5 0.6 2.9
July 21.6       0.7 10.6 4.5 0.5 0.7 0.5 4.1
June 21.3       0.2 0.8 14.8 1.0 0.5 0.4 3.8
May 21.5         0.1 7.2 9.2 0.6 0.6 3.9
April 21.6           1.0 12.1 3.9 0.8 3.8
March 22.1           0.2 1.0 13.2 2.8 4.9
February 22.9             0.3 2.0 14.9 5.7
January 23.4               0.7 8.5 14.2
2014 Total FF34 FF33 FF32 FF31 FF30 FF29 FF28 FF27 FF26 Older
December 23.6 11.3 6.2 0.6 1.0 0.5 0.3 0.2 0.1 0.2 3.2
November 23.4 1.2 15.4 2.3 1.1 0.7 0.3 0.2 0.2 0.2 1.8
October 23.4 0.4 4.0 13.4 1.3 0.6 0.4 0.2 0.2 0.2 2.7
September 24.0   0.8 10.9 6.7 1.0 0.5 0.3 0.2 0.2 3.4
August 24.7     1.3 17.0 1.5 0.8 0.4 0.2 0.3 3.2
July 24.9       3.1 15.6 1.1 0.6 0.2 0.4 3.9
June 25.1         9.0 10.5 0.7 0.4 0.4 4.1
May 24.9         0.1 14.2 5.2 0.5 0.5 4.4
April 25.0           1.1 18.1 1.2 0.7 3.9
March 25.6           0.3 3.4 16.3 1.0 4.6
February 26.4             0.6 11.7 8.7 5.4
January 26.9               1.2 18.9 6.8
2013 Total FF26 FF25 FF24 FF23 FF22 FF21 FF20 FF19 FF18 FF17 Older
December 26.8 6.9 13.3 1.1 0.5 0.4 0.3 0.4 0.2 0.2 0.5 3.0
November 26.8 1.0 16.2 3.5 0.7 0.5 0.4 0.4 0.3 0.2 0.7 2.9
October 27.2 0.1 1.3 18.4 2.0 0.7 0.4 0.5 0.3 0.4 0.7 2.5
September 27.8 0.1 0.3 3.1 17.5 1.0 0.6 0.5 0.3 0.4 0.9 3.2
August 28.2     0.7 10.8 9.9 1.0 0.7 0.4 0.4 0.8 3.5
July 28.9     0.1 1.2 18.0 3.1 1.0 0.5 0.5 0.8 3.7
June 28.9       0.1 1.7 19.8 1.3 0.7 0.5 0.8 4.0
May 27.7       0.1 0.5 6.5 14.0 0.9 0.6 0.8 4.3
April 27.9         0.1 0.7 12.9 7.3 0.8 0.8 5.9
March 28.5           0.1 0.9 19.0 1.4 0.9 6.2
February 29.6           0.1 0.2 4.6 16.0 1.2 7.5
January 30.2             0.1 0.6 12.4 8.3 8.8
2012 Total FF17 FF16 FF15 FF14 FF13 FF12 FF11 FF 9-10 FF4-8 FF3.6 Older
December 31.1 16.3 5.6 1.3 1.0 0.7 1.1 0.6 1.2 1.2 0.8 1.3
November 31.2 2.5 19.4 1.8 1.2 0.8 1.2 0.6 1.3 1.3 0.8 0.3
October 31.8 0.4 9.5 12.4 1.8 1.0 1.4 0.8 1.4 1.6 1.0 0.5
September 32.2   0.8 17.7 4.8 1.3 1.6 1.0 1.6 1.9 1.2 0.3
August 32.8     1.9 20.3 2.1 1.8 1.1 1.7 2.1 1.2 0.7
July 33.7     0.3 7.4 15.2 3.0 1.3 2.1 2.4 1.5 0.5
June 34.4       0.6 12.1 12.5 1.6 2.3 2.7 1.8 0.8
May 35.2       0.1 0.8 21.4 3.8 2.7 3.4 2.3 0.7
April 35.8         0.1 2.6 21.6 3.8 3.8 3.1 0.8
March 36.3           0.3 9.1 17.3 5.0 3.7 0.9
February 37.1           0.1 0.6 24.2 6.5 4.3 1.4
January 37.2             0.1 18.6 12.4 5.0 1.1
2011 Total   FF 9 FF 8 FF 7 FF 6 FF 5 FF4 FF3.6 FF3.5 FF3.0 Older
December 37.7   1.8 22.8 2.1 1.5 1.2 1.3 5.6 0.6 0.5 0.3
November 38.1   0.4 12.7 11.5 2.2 1.5 1.5 6.9 0.6 0.5 0.3
October 38.7     0.6 19.8 5.1 2.0 1.8 7.9 0.7 0.5 0.3
September 39.7       1.5 22.2 3.1 2.2 9.0 0.7 0.7 0.3
August 40.6         9.5 15.9 2.9 10.3 0.8 0.8 0.4
July 42.0         0.6 23.2 4.6 11.5 0.9 0.9 0.3
June 42.2           5.6 21.5 12.3 1.5 0.9 0.4
May 42.4           0.3 23.4 15.6 1.8 1.0 0.3
April 42.9             15.7 23.8 2.1 1.1 0.2
March 42.2             5.2 32.9 2.5 1.3 0.3
February 42.4             1.9 35.8 2.9 1.5 0.3
January 42.8             1.5 36.1 3.1 1.7 0.4
2010 Total             FF4 FF3.6 FF3.5 FF3.0 Older
December 43.5             1.1 36.5 3.5 2.0 0.4
November 44.0             0.8 36.9 3.8 2.0 0.5
October 44.4             0.7 36.2 4.5 2.4 0.6
September 45.1             0.8 35.3 5.6 2.9 0.5
August 45.8             0.6 35.2 6.1 3.1 0.6
July 46.4             0.4 34.5 7.3 3.6 0.6
June 46.6               32.7 9.1 4.0 0.8
May 46.9               31.7 10.0 4.4 0.8
April 46.4               29.4 11.5 4.6 0.9
March 46.2               22.1 17.6 5.6 0.9
February 46.5               10.5 28.5 6.5 1.0
January 46.3               2.2 34.2 8.6 1.3
2009 Total               FF3.5 FF3.0 FF2.0 Older
December 46.4               33.3 11.2 1.2 0.7
November 47.0               31.4 13.6 1.5 0.5
October 47.5               29.8 15.7 1.6 0.4
September 46.6               27.3 17.2 1.8 0.3
August 47.4               21.0 24.0 1.9 0.5
July 47.9               12.1 33.3 1.9 0.6
June 47.3               1.2 43.4 2.3 0.4
May 47.7                 44.3 2.9 0.5
April 47.1                 43.4 2.8 0.9
March 46.5                 42.2 3.0 1.3
February 46.4                 41.5 3.8 1.1
January 45.5                 39.5 4.6 1.4
2008 Total               FF3.0 FF2.0 FF1.5 Moz
December 44.7               38.1 6.2 0.1 0.3
November 44.6               35.9 8.0 0.3 0.4
October 44.5               34.9 8.7 0.4 0.5
September 43.1               31.9 10.1 0.6 0.5
August 44.2               25.5 17.5 0.7 0.5
July 43.1               20.7 21.1 0.8 0.5
June 41.5               8.9 31.2 0.9 0.5
May 40.5               2.9 35.9 1.0 0.7