Firefox version history

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Market share overview According to StatCounter data July 2024[1] This box: view talk edit

Browser % of Fx % of total Firefox 1 — — Firefox 2 — — Firefox 3 — — Firefox 4 — — Firefox 5–9 — — Firefox 10–16 0.73% 0.02% Firefox 17–23 — — Firefox 24–30 — — Firefox 31–37 — — Firefox 38–44 — — Firefox 45–51 — — Firefox 52–59 2.19% 0.06% Firefox 60–67 — — Firefox 68–77 — — Firefox 78–90 0.37% 0.01% Firefox 91–101 — — Firefox 102–114 — — Firefox 115 and 115 ESR 13.14% 0.36% Firefox 116 — — Firefox 117 — — Firefox 118 2.56% 0.07% Firefox 119 — — Firefox 120 0.37% 0.01% Firefox 121 0.37% 0.01% Firefox 122 — — Firefox 123 1.10% 0.03% Firefox 124 0.37% 0.01% Firefox 125 0.73% 0.02% Firefox 126 2.19% 0.06% Firefox 127 25.55% 0.70% Firefox 128 and 128 ESR 40.15% 1.10% Firefox 129 — — All variants[2] 100% 2.74%

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]