Rated 4 out of 5 stars

le ethana2 ar Lún. 21, 2008 · buan-nasc

http://techpatterns.com/downloads/firefox/useragentswitcher.xml
So now I just need to find a list of just the major ones:

Safari, IE, Firefox, Opera

XP, Vista, Leapord, Hardy, Sulfur

Once I get it configured properly it looks like it'll really come in handy.. I'm used to just using about:config for all this ;)