SeaMonkey
 

i was using firefox and decided to give this a shot..... haven't ran into a site that it doesn't work on....... i love it and it seems to be even more stable and faster than firefox!!!!! and for the vista users the damn annoying thing where if you have your cursor over a link for lke 1 second it opens...... thats disabled in seamonkey which i love!!!

http://www.mozilla.org/projects/seamonkey/