Download Firefox Developer Edition 141.0b8

Get the latest features, fast performance, and the development tools!

Updated: July 11, 2025

Size: 147 MB

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147 MB · July 11, 2025

Firefox%20141.0b8.dmg

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141.0b9 July 13, 2025 147 MB 141.0b8 July 11, 2025 147 MB 141.0b7 July 09, 2025 148 MB 141.0b6 July 06, 2025 149 MB 141.0b5 July 04, 2025 144 MB 141.0b4 July 02, 2025 144 MB