on Nov 17th, 2006Firebug
This handy little tool is in beta and looks to be a promising add on to Firefox. The plugin allows you to do a host of activities on any web page, this basically includes navigating css, DOm, javascript etc. They are also provide tools to profile/debug javascript and monitor site performance/load time etc. For teh developer community migrating into the web 2.0 frameset, the language of richer UI, javascript may seem a little if not completely alien. I think development tolls like this with easy usability will only help their cause.
Eagerly awiting the release.. 
