All your Firefox are belong to Firesomething
Firesomething “is
an extension for Mozilla Firefox/Firebird. It allows you to change the product
name in various parts of the browser. Random name generation ensures perpetual
humor and possible end-user confusion.”
As you can see I’ve been kind enough to put a comment in my User-Agent string
so sites can deduce the true browser. I also didn’t change it from Mozilla,
but that is possible.