
Firefox Nightly 58.0
Free
Latest version:
86.0
See all
Developer:
Mozilla
Firefox Nightly is a pre-release version of Firefox designed for testing purposes. This version provides access to features in developments months before they become mainstream. The usage details and errors are sent to Mozilla for improvement. You can also install Nightly Tester Tools add-on, which can be used to customize the interface and do crash tests.
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