Take a browse on the wild side.
Be among the first to explore future releases of Firefox for desktop, Android and iOS
Beta
Test about-to-be-released features in the most stable pre-release build.
Firefox Beta automatically sends feedback to Mozilla.
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Give us feedback to help us put the final tweaks on performance and functionality in a stable environment.
Developer Edition
Build, test, scale and more with the only browser built just for developers.
Firefox Developer Edition automatically sends feedback to Mozilla.
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Nightly
Test brand new features daily (or… nightly). Enjoy at your own risk.
Firefox Nightly automatically sends feedback to Mozilla.
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