It won’t be the last Firefox extension that I’ll spotlight. Firebug is the gold standard of web debugging and not only that, is now really a platform for all of sorts of IDE hooks to allow in-depth web application testing. It’s just fantastic. If you’re a web developer in any sense of the word, you should be using it.
How Good is the Linux App?
App name should be marketable
Has a nice app icon
Uses Tango icon guidelines
Slick UI that's fun to use
Killer feature people talk about
Top-level domain name
Site has FAQs for users
Site has a User forum
Site has a way to contact the developers
Packages for Ubuntu, Fedora, and openSUSE