If you didn't already know it, Mozilla just released Firefox 3's newest beta. It promised to be quicker, simpler, easier, and just plain sweeter - and it is! I'm writing about this now because of how astoundingly fast it has been to switch between tabs, load windows, change things around, etc =D
And this is after a full day of browsing already. The other beta release was starting to slow down a bit (after 50+ hours of continued use, usually), but this one is just S-W-I-F-T. Like a fox should be ;D
Here's
Ars Technica's review of their coolest features (like moving tabs to different windows!) and
here's where you can download it.