Firefox Nightly is a developmental channel for new Mozilla Firefox releases. Firefox Aurora is no longer available and has transitioned to Firefox Nightly. More details Download the release version of Firefox Firefox Nightly is designed to showcase the more experimental builds of Firefox.
The download of the app is safe and secure. Mozilla is the developer of Firefox Nightly for Developers that can be found in the Communication category. This application has been downloaded and installed by over 1M users and the latest update is dated Apr 1, 2019.