Multiple Tab Handler
https://addons.mozilla.org/en-US/firefox/addon/4838
“Duplicate Tab”, “Close All Tabs”, “Close Left Tabs”, “Close Right Tabs”, “Copy URL” and “Close Slimilar Tabs”.
Cooliris
https://addons.mozilla.org/en-US/firefox/search?q=cooliris&cat=all
Full-Screen, 3D — Cooliris (formerly PicLens) transforms your browser into a visually stunning, lightning fast way to search, discover, view and share online photos, videos and more.
Forecastfox
https://addons.mozilla.org/en-US/firefox/addon/398
Get international weather forecasts from AccuWeather.com, and display it in any toolbar or statusbar
meebo 1.1
https://addons.mozilla.org/en-US/firefox/addon/5700
sidebar lets you keep an eye on your Meebo session while you do other stuff
NewTabURL 1.6.0
https://addons.mozilla.org/en-US/firefox/addon/2221
Select default URL when new tabs are opened: “Blank page”, “Home page”, “Current page” or a user defined URL.
