Nope, it's not Firefox, and not Safari, though I've had flings with both in the past. Not Camino, not even Chrome.
Faster than Chrome, available on Windows, Mac, and Linux, and oh - it supports your Firefox add-ins, as long as you're willing to force compatibility using Nightly Tester Tools. Minefield is an alpha release, so it's likely to still be buggy. So far I've been lucky though; all of the add-ins that I've activated have worked fine right out of the gate.
Let me guess, you're in love now too, eh? Well, there's more than enough Minefield to go around. Go get some. Minefield, that is.
Me too.. I have try it, see the picture above.. Its really fast....
Minefield, from Mozilla choose installer