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The Mozilla Firefox Browser


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 numbers below are shown in percentages, and are extracted from W3Schools' Statistics.

2021 Total 92 91 90 89 88 87 86 85 84 Older
August 5.6 0.2 2.7 1.9 0.2 0.1 0.0 0.0 0.0 0.0 0.5
July 5.6   0.1 1.9 3.0 0.1 0.0 0.0 0.0 0.0 0.5
June 5.6     0.2 4.0 0.8 0.1 0.0 0.0 0.0 0.5
May 5.8       0.2 4.6 0.1 0.1 0.1 0.0 0.7
April 6.1       0.1 1.4 3.4 0.2 0.1 0.0 0.9
March 6.3         0.1 0.9 4.0 0.3 0.1 0.9
February 6.6           0.1 0.6 4.5 0.4 1.0
January 6.7               0.6 5.0 1.1
2020 Total 85 84 83 82 81 80 79 78 77 76 75 74 73 Older
December 6.7 0.1 2.1 3.3 0.2 0.1 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.1 0.4
November 7.1   0.1 2.0 3.7 0.4 0.1 0.1 0.3 0.0 0.0 0.0 0.0 0.1 0.3
October 7.1     0.1 1.1 5.0 0.3 0.1 0.3 0.0 0.0 0.0 0.0 0.1 0.1
September 7.2       0.1 1.1 4.6 0.2 0.2 0.0 0.1 0.0 0.0 0.1 0.8
August 7.3           0.8 4.7 0.4 0.1 0.1 0.0 0.0 0.0 1.2
July 7.6             0.4 4.8 1.0 0.1 0.0 0.0 0.0 1.3
June 8.1               0.3 5.1 1.2 0.1 0.1 0.1 1.2
May 8.5                 0.3 5.0 2.0 0.2 0.0 1.0
April 8.6                   0.3 4.6 2.4 0.2 1.1
March 8.7                     0.2 3.9 2.9 1.7
February 8.7                       0.3 2.7 5.7
January 9.1                         0.3 8.8
2019 Total 72 71 70 69 68 67 66 65 64 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 65 64 63 62 61 60 59 58 57 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 58 57 56 55 54 53 52 51 50 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 51 50 49 48 47 46 45 44 43 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 43 42 41 40 39 38 37 36 35 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 34 33 32 31 30 29 28 27 26 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 26 25 24 23 22 21 20 19 18 17 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 17 16 15 14 13 12 11  9-10 4-8 3.6 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