Just referencing the new M9 (mobile) browser from Mozilla you can get an alpha version at their website if you own a Nokia N810 there’s also an emulator for Mac OS X (Leopard), Windows and Linux. I’ve tested it on the mac and it’s pretty sleek, it has some Mozilla labs ideas in there (see: Aurora project from adaptive path for some mind blowing stuff & Mozilla Concept Series) the new navigation in the mobile browser comes from Aza Raskin ( Head of User Experience for Mozilla Labs ) , check his blog for some cool stuff too.
Overall i really liked the browser too bad i own an iPhone 