Warning: Nightly is an unstable testing and development platform. By default, Firefox Nightly automatically sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared: www.mozilla.org/en-US/privacy/firefox/#pre-release

Firefox Nightly gets updated every day and is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.

Found a bug? Report it at: github.com/mozilla-mobile/fenix/issues

Want to know more about the permissions Firefox requests?: mzl.la/Permissions

See our list of supported devices and latest minimum system requirements at: www.mozilla.org/firefox/mobile/platforms/

Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here: www.mozilla.org/privacy/firefox/

Take a browse on the wild side. Be among the first to explore future releases.

Variant
Arch
Version
DPI
(x86)
Latest: 115.0a1 on May 9, 2023
(x86_64)
Latest: 115.0a1 on May 9, 2023
All versions

Version:115.0a1

Uploaded:June 1, 2023 at 7:07PM UTC

File size:83.43 MB

Downloads:2,089

Version:114.0a1

Uploaded:May 7, 2023 at 6:35PM UTC

File size:82.89 MB

Downloads:2,286

Version:113.0a1

Uploaded:April 10, 2023 at 5:28AM UTC

File size:82.21 MB

Downloads:2,157

Version:112.0a1

Uploaded:March 13, 2023 at 6:56AM UTC

File size:81.8 MB

Downloads:2,027

Firefox Nightly for Developers 111.0a1

Version:111.0a1

Uploaded:February 14, 2023 at 12:58AM UTC

File size:81.28 MB

Downloads:2,541

Firefox Nightly for Developers 110.0a1

Version:110.0a1

Uploaded:January 17, 2023 at 6:16AM UTC

File size:81.23 MB

Downloads:3,474

Firefox Nightly for Developers 109.0a1

Version:109.0a1

Uploaded:December 12, 2022 at 11:56PM UTC

File size:78.51 MB

Downloads:2,418

Firefox Nightly for Developers 108.0a1

Version:108.0a1

Uploaded:November 15, 2022 at 1:44AM UTC

File size:76.86 MB

Downloads:2,615

Firefox Nightly for Developers 107.0a1

Version:107.0a1

Uploaded:October 18, 2022 at 1:33AM UTC

File size:76.29 MB

Downloads:1,986

Firefox Nightly for Developers 106.0a1

Version:106.0a1

Uploaded:September 19, 2022 at 8:09PM UTC

File size:77.44 MB

Downloads:2,004