Take a browse on the wild side.
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Test about-to-be-released features in the most stable pre-release build.
Beta is an unstable testing and development platform. By default, Beta sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared.
Give us feedback to help us put the final tweaks on performance and functionality in a stable environment.
Build, test, scale and more with the only browser built just for developers.
Get a sneak peek at our next generation web browser, and help us make it the best browser it can be: try Firefox Nightly.