&gt; Aurora is alpha<p>Excuse my ignorance, but is this official? I use FF Dev edition as my primary browser and it is very stable for me.<p>Context, if it helps: I am a web dev most of the time, and my browser usage is almost always &gt;100 tabs or so. More than half of those have the devtools open all the time (each of which basically count as another instance of Firefox). My machine is pretty modest (i5, dual core, 8gigs RAM). I don&#x27;t use many extensions though. Only a lightweight custom theme and greasemonkey + lots of custom userscripts.
Reason I use dev edition is because it has more devtools goodies and ES6 features. Nothing related to extension development.