Understanding Nightly, Aurora, Beta and Final versions of Firefox

Firefox is released under four different names: Nightly, Aurora, Beta and the Final version. This infographic explains what these different names represent.

Firefox Nightly is for developers, bug testers and should not be used by general people at all. The Aurora build is similar to Alpha release and it should be only used if you're very enthusiastic to test new features and don't worry about bugs, flaws much.

The beta version is the one I recommend for general users because it's very closed to stable build,  has no or minimal flaws and is always up to date but if you've very much concerned about browser security, memory and want total perfection then Firefox final version is what you should go for.

Different Firefox builds