Download Firefox 121.0 (64-bit)

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

Updated: December 20, 2023

Size: 57.5 MB

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57.5 MB · December 20, 2023

Firefox Setup 121.0.exe

Previous versions More »

142.0.1 August 28, 2025 78.6 MB 142.0 August 20, 2025 78.6 MB 141.0.3 August 08, 2025 78.2 MB 141.0.2 August 06, 2025 78.2 MB 141.0 July 22, 2025 78.2 MB 140.0.4 July 09, 2025 69.5 MB