I'm not sure how old it is, but my friend just showed it to me. It called Web Developer, and it's mainly for web developers (obviously). It has a lot of other features too. Basically what it lets you do is view just about anything and everything that makes up the webpage you're viewing. Everything from the CSS to the smallest HTML attributes to cookie info. If you don't a website's colors, you can disable them. Disable javascript, images, popup blocker, all kinds of crap. You can even resize webpages, even edit the CSS of the page to make it look how you want.There's way too much it can do to explain, so just get it and play with it if you don't already have it. It's quite possibly the best Firefox plugin there is.
Download at: http://chrispederick.com/work/webdeveloper/
Yes, it works for Firefox 2.
WOOOOOOOO. Sounds awesome teh strom!
I've had this forever, yet I still haven't used it really. =/
There's somethign similar for Internet Explorer.
http://www.snapfiles.com/get/AccessibilityToolbar.html
This also has wierd stuff like simulating cataracts and stuff.
It's kinda nice for people who want to learn HTML and CSS. That's what my friend was using it for. If it can teach a 14-year-old girl this stuff, it can teach anyone (except Jesse).
The only plug-in I have for firefox is the download taskbar. :(
I've been using this since I first discovered FF.
I got it mainly for back when I was doing web development, but I've kept it since its just so **** handy!. :D
I like this plug in. I wish I'd known back when I was learning HTML. I would biew source but sometime, just couldn't make out all of that text.