Add your favorite Firefox Plugin

I am having many firefox plugins.But the one I like the most is :

SEO Plugin :

http://www.quirk.biz/searchstatus

What about you ?

 

Is there a place where it gives you a list of FF Plug ins that you can download?

 

ScribeFire is a great Firefox plugin that supports multiple blogging platforms: https://addons.mozilla.org/en-US/firefox/addon/1730

 

you mean addons.mozilla.org ?