Yeah, the firebug addon for firefox3 is almost available. I’ve found that I’ve become very dependent on this little tool and it’s not being available in firefox3 is one of the things that has stopped me from upgrading. It looks like the guys at http://getfirebug.com have almost got this working. Nice work guys.

Firebug – Web Development Evolved » Blog Archive » Firebug 1.2b1