
About Firefox Nightly for Developers
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.
Download Firefox Nightly for Developers
This release comes in several variants (we currently have 216). Consult our handy FAQ to see which download is right for you.
Version:122.0a1
Uploaded:December 10, 2023 at 7:38AM UTC
File size:32.11 MB
Downloads:1,218
Version:121.0a1
Uploaded:November 20, 2023 at 6:06AM UTC
File size:89.22 MB
Downloads:1,910
Version:120.0a1
Uploaded:October 23, 2023 at 5:40AM UTC
File size:87.29 MB
Downloads:2,299
Version:119.0a1
Uploaded:September 25, 2023 at 8:12AM UTC
File size:85.11 MB
Downloads:2,711
Version:118.0a1
Uploaded:August 28, 2023 at 6:41AM UTC
File size:87.23 MB
Downloads:2,005
Version:117.0a1
Uploaded:July 31, 2023 at 6:48AM UTC
File size:86.61 MB
Downloads:2,158
Version:116.0a1
Uploaded:July 4, 2023 at 3:05PM UTC
File size:83.22 MB
Downloads:2,745
Version:115.0a1
Uploaded:June 4, 2023 at 6:53PM UTC
File size:83.43 MB
Downloads:2,542
Version:114.0a1
Uploaded:May 7, 2023 at 6:35PM UTC
File size:82.89 MB
Downloads:2,512
Version:113.0a1
Uploaded:April 10, 2023 at 5:28AM UTC
File size:82.21 MB
Downloads:2,339