[cmeisenzahl]

I've you haven't been using Firefox, check it out:
http://www.mozilla.org/

I love these extensions, what do you like?
http://minimizetotray.mozdev.org/

http://forecastfox.mozdev.org/

[Millennium]

Forecastfox is great on Windows, because it's a passable alternative to the spyware-laden WeatherBug. I prefer Meteorologist on the Mac, though. Adblock, FlashBlock, and Web Developer are godsends on any platform. I've considered trying out Greasemonkey from time to time, but the security implications keep scaring me away. That's about it for me right now, though. I've tried out several others, but these are the ones I keep around.

[EmmEff]

(can't figure out how to inline that img)

My extensions...

1. Auto Copy
2. Adblock
3. All-In-One Gestures
4. Disable Targets for Downloads
5. Add Bookmark Here
6. Popups Must Die!
7. Greasemonkey
8. Tabbrowser Preferences
9. Sage

The screenshot of my Extensions window is from XP but I use the same extensions on OS X.

[jasonsRX7]

DownThemAll and Adblock

[wataru]

I love the Sage newsreader extension, Adblock and Web Developer of course, and the del.icio.us plugin. I also use Tweak Network and Forecastfox.

I've compiled a bunch of Firefox resources, including extensions, at http://del.icio.us/amake/Firefox.