Firefox Nightly (formerly known as Aurora), is the distribution channel of the well-known Mozilla browser for the most recent versions that are still in the testing phase. An ideal method for developers to test the behavior of their tools and web pages in future updates.
Although the browser is fully functional, being an alpha version may be unstable. In return, we will have the latest features that Mozilla has added to Firefox much earlier than the rest of users who update it from the stable channel.
The experimental versions of Firefox offer the possibility of sending information automatically to its developers to refine their software for the implementation in the beta channel, the next step before it is ‘gold’.