To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Rated 5 out of 5 stars
Useful addon for adjusting CSS, developing site templates and wordpress themes.
I wonder if it could integrate with Firebug,like the famous Pagespeed and Yahoo Yslow addon.