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.
Developer Edition
Build, test, scale and more with the only browser built just for developers.
Developer Edition is an unstable testing and development platform. By default, Developer Edition sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared.
Nightly
Get a sneak peek at our next generation web browser, and help us make it the best browser it can be: try Firefox Nightly.
Nightly is an unstable testing and development platform. By default, Nightly sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared.
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