Not really. It's not that other debuggers didn't provide some of those features and were very good at, say, stepping through program logic. I've spent many year

Not really. It's not that other debuggers didn't provide some of those features and were very good at, say, stepping through program logic. I've spent many years using other debugging tools for C/C++ and Java, and although there are some good IDE's out there, firebug's capability to analyze everything from logic to object models to network activity and visual presentation details, in such a well-integrated and user-friendly way was frankly unprecedented.