What FireFox add-ons do you use?

In response to the previous thread about what browser you use, I figured I'd find out what add-ons you guys are using for FireFox (since it's an overwhelming majority)

As a web developer, my most useful one is Firebug.
I also use Foxmarks Bookmark Synchronizer. I use FireFox on about 3 computers, and it's so nice to bookmark it once, and it appears on all 3.

I also use ColorfulTabs and a few other ones.

If you're a die-hard IE user or Safari user - Some of the add-ons will definitely change your mind about FireFox ;)

I use NoScript, reloadevery, evernote, downloadthemall and adblock (not sure if that's firefox or standalone though)

Excellent thread!!

I use Fast Dial





I just had to download colorful threads, and Download Them All

Adblock Filterset G Updater
Adblock Plus
Colorful Tabs
Download Statusbar
Gmail Manager
IE Tab
IE view
Password Exporter
Tab Mix Plus

At the moment:

ForecastFox
Menu Editor
Oldbar
Snap Links
Tab Scope
Web Developer

Adblock Plus
ForecastFox
Tiny Menu