There are many useful Firefox add-ons which helps us in Web Development, I would like to thank each and every developer who has given us these add-ons to us. These add-ons or extensions are also known as in-browser tools. In my perspective I would like to say these helps me a lot and save my lots of time. These makes life's very easier and cool as well, these may can be used as a reusable components as well.

As we all know that firebug is a great add-on for Firefox, this is available in all the respective versions and even it supports all the versions of Firefox. It has got awesome features, I would like to the firebug team that most of the developers who works on User Interface has installed firebug on their respective computers. Developers and Users can use this add-on very easily and its very handy too.

If you guys have Firebug installed in your Firefox browser, hmm.... then it can make Gmail slow. For the better performance Gmail team is suggesting us to disable Firebug for www.google.com . Even they have given some instructions to how we can disable Firebug.