Download Firefox 121.0

One of the World`s Most Popular Web Browsers for Mac

Updated: December 20, 2023

Size: 128 MB

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128 MB · December 20, 2023

Firefox 121.0.dmg

Previous versions More »

145.0.1 November 19, 2025 137 MB 145.0 November 11, 2025 137 MB 144.0.2 October 29, 2025 135 MB 144.0 October 15, 2025 135 MB 143.0.3 October 01, 2025 134 MB 143.0.1 September 21, 2025 134 MB