Firefox version history


Market share overview
According to StatCounter data
February 2024[1]
Browser % of Fx % of total
Firefox 1
Firefox 2
Firefox 3
Firefox 4
Firefox 5–9
Firefox 10–16 1.65% 0.05%
Firefox 17–23
Firefox 24–30
Firefox 31–37
Firefox 38–44
Firefox 45–51
Firefox 52–59 2.30% 0.07%
Firefox 60–67
Firefox 68–77
Firefox 78–90 0.99% 0.03%
Firefox 91–101
Firefox 102–114 1.65% 0.05%
Firefox 115 and 115 ESR 14.66% 0.45%
Firefox 116
Firefox 117 0.33% 0.01%
Firefox 118 3.29% 0.10%
Firefox 119 3.95% 0.12%
Firefox 120 3.62% 0.11%
Firefox 121 2.63% 0.08%
Firefox 122 43.42% 1.32%
Firefox 123 12.50% 0.38%
Firefox 124
All variants[2] 100% 3.04%

Firefox was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla browser, first released as Firefox 1.0 on November 9, 2004. Starting with version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks. This was gradually accelerated further in late 2019, so that new major releases occur on four-week cycles starting in 2020.[3]

  1. ^ "Top 12 Desktop, Mobile, Tablet & Console Browser Versions on Feb 2024". StatCounter Global Stats.
  2. ^ "Top 9 Desktop, Mobile, Tablet & Console Browsers on Feb 2024". StatCounter Global Stats.
  3. ^ Kothari, Ritu; Or, Yan. "Moving Firefox to a faster 4-week release cycle". Mozilla Hacks. Retrieved February 26, 2020.