Firefox 3.5 is fast, but not hella fast like Safari 4. Apple's web browser significantly outpaces the fox on Mac, and Windows. Safari scores perfectly on the Acid3 test, and is generous enough to support H.264 video. Firefox does support third-party Add-ons. Mozilla's own Firebug, and the Web Developer toolbar are quite useful. Of course, Safari 4 has built-in developer tools of its own...

