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Aurora is the rapid-fire release channel for the next iteration of the Firefox Web browser. The Aurora channel is where users can test the latest features and innovations. Users can expect an increase in polish from the raw, cutting edge features in the nightly builds. Aurora releases may not be as stable as beta or final releases.

With Aurora:

  • Experience the newest innovations in an unstable environment that's not for the faint of heart
  • Provide feedback on features and performance to help determine what makes the final release

What's New

Version 32.0a2:


  • Display the number of found items in the find toolbar
  • Login metadata viewable in password manager
  • mix-blend-mode enabled by default
  • CSS position:sticky enabled by default
  • drawFocusIfNeeded enabled by default
  • HiDPI support in Developer Tools UI
  • ECMAScript 6 built-in method more...


OS X 10.6 or later

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Aurora User Discussion

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Nevt Member IconReview+5

Firefox Aurora 29a2 is out: ftp://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/

And I love the new UI Austrailis that comes with FF29. Can't wait for that build to become the stable release :)

Good job Mozilla!

Reply0 replies
Version 28.0a2
Akanico Member IconComment+35

Would be great to be using alpha or beta releases the way we can actually do with google chrome products, which is with having a different profil running automatically.

In other words, Aurora should be treated and executed as a different app as the firefox stable release installed with its own folder and its own profile.

I think more people would go ahead and try these future releases that way.

Reply0 replies
Version 27.0a2
Mikael B Member IconComment+414
Mikael B

Anyone know how to turn off the "update plugins" suggestion for a specific plugin?
I'm partly on PPC and can't update Flash. When I develop on my PPC machine and test pages in Aurora I keep getting these reminders and have to click them every time before the flash plugin work, which is a nuisance.

Reply1 reply
Version 15.0a2
Mikael B

My apologies, that was supposed to go the Aurorafox page.

MikkelFE Member IconReview+7

better support for lion.. now with full screen support for Mac OS X Lion

Reply0 replies
Version 14.0a2
alas! Member IconReview+571

FF 5 through 7 have been incredibly glitchy for me with v7 being a real bummer. Then, inexplicably, v7.0.1 turned things around for me being essentially issue free.
I seem to be one of the only ones for whom 7.0.1 is a winner.
At v7 I was about ready to give up on FF; I was bitching and moaning along with many others.
Now, Aurora(really FF9) comes along and whaddya know, it's incredibly good;I am impressed. I'm finding it a bit faster than v7.0.1 and have yet to discover a bug therein.
So far it's smooth saying all the way.
I've got both v7 and 9(Aurora) in my dock and have been switching back and forth comparing the two and have to say that unless Aurora throws me a major curve, I'll likely stay with it.
Of course, most of my ad-ons don't work in Aurora yet, but before long they should be compatible. At least Ghostery is working, I hate web bugs(trackers, behavioral data collectors and ad networks; In Ghostery I can block those miscreants).
Yeah, Firefox is real sweet once again; everthing's copasetic at this point.
I may even forgive Mozilla for its wham, bam, thank you mam approach to turning out versions, although I still can't grok Mozilla's rationale for turning out versions so frequently.
What's the hurry???
So what if Google is spitting out Chrome versions like crazy?…"Oh God, Chrome's at version 15 already, gotta get humpin' ".
Firefox is a much more competent and elegantly designed browser, now isn't it?

Reply1 reply
Version 9.0a2

Typo above: Should read "So far it's smooth SAILING all the way".

Steven Goodheart Member IconReview+442
Steven Goodheart

Firefox 7.0 has become such a "crasher" for me, every 5 to 10 minutes, I thought, "What the hell, could Aurora be any worse?"

So far I'm not getting the regular crashes I was getting with 7.0 (b5) -- recurring crashes that happened even with all add-ons disabled. Guess I'll see soon enough if this going to be better...got so bad, I started using Chrome -- a huge memory hog, but at least it doesn't crash every 10 minutes.

Reply1 reply
Version 8.0a2
Steven Goodheart

Switching back and forth between 7.0 and Aurora, this is what I discovered. (I also shared this in my earlier post at Firefox 7.0)

Update: things settle down after one of the updates you can get from doing "About Firefox," and then running with all extensions off. Once I seemed to have a stable base, I one-by-one added back Add-ons. And what I found was that that if I had the Better Facebook Add-on installed, the crashes were regular -- and almost always occurwred while i was writing a comment or post on Facebook. I turned Better Facebook on and off, to double, triple-check, and I can say with assurane that on *my machine,* BFB will repeatedly crash Firefox 7.0. I then tried the same thing on Aurora 8.0 (lastest b. whatever) and found the exact same thing. With Better Facebook installed, I couldn't keep 8.0b up for more than 10 or 15 mintues at a time, especialy when working in Facebook.

The Better Facebook site says that BFB is broken due to massive changes at FB, but that version is workable. That may be, in terms of functionality, but this crashing Firefox is a whole other thing.

Let me add that I'm a HUGE fan of the Better Facebook add-on and have donated a couple of times to the developer's fine efforts. That said, I absolutely can make Firefox *on my machine* a crasher if I have the BFB add-on loaded. And this problem preceded the big changes at Facebook.

So, I'm posting this for your information, in case Firefox had become almost unusable due to repeated crashes. Maybe BFB is only compatible with 6.0...I don't know.

I'd be interested to hear the experience of others. The main thing is I got my Firefox back, and I seem to have isolated the culprit. YMMV.

Mac007 Member IconReview+197

For beta software this is not bad. It does have problems with Facebook Flash based games but overall it works fairly well. I still have to use it more to get a better feel for it's good and bad aspects but for now I have a very favorable view.

Reply1 reply
Version 5.0a2

"Facebook Flash based games". Are you serious? If you have too much time, come to my house - I have lots of stuff that needs some fixing.

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Version 32.0a2
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Version 31.0a2
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Version 31.0a2
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Version 30.0a2
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Version 29.0a2
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Version 25.0a2
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Version 25.0a2
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Version 21.0a2
> 4 14


Current Version (32.x)


Downloads 12,123
Version Downloads 438
License Free
Date 14 Jun 2014
Platform Intel 64 / OS X / Intel 32
Price Free
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