Encytemedia Analyzes Firebug and How It Has Advanced Javascript Debugging Firebug is indeed a marvel... It has a few quirks I find irritating (for example, it isn't good at "sticking" to a particular mode, always wanted to hop back to neutral), but it's a welcome improvement over other Mozilla-bound debuggers I've used. I still think WebKit's Web Inspector has the potential to beat its pants off... if they ever finish it! This is a nice in-depth look at Firebug and what still needs to be done to improve JavaScript debugging.