On occasion I like to mess with javascript. I write javascript for IE, its where I started so I’m comfortable there. But as we all know you sometimes have to make it compatible with other browsers and rightly so (to a point).
I only bothered with making things work in firefox, opera and the others can take a running jump. So last time I did anything I found the javascript debugger for firefox and installed it. It worked and it didnt (sometimes) not exactly a visual studio experience but it got the job done.
Looks like a new kid on the block though and it looks good, I haven’t had a piece of work to try it out on but it provides the functionality of a debugger, a network monitor (fiddler equivalent), and a dom interogator (IE Dev toolbar equivalent).
From first glances I like this tool, so if your in the firefox dev pit give it a whirl.