21. Clearing the Cache in Firefox 1.5+:
SHIFT + CTRL + R

Essential extension for Developers working on Websites:
ScreenGrab - Takes a png screenshot of the current page on Firefox. A COMPLETE screenshot, including all the content below the current viewport - in fact it actually scrolls the page and glues the all thing using Java, which can be slow at times but the result is a MUST for anyone working on the web... Has options to save just what you're seeing (viewport) or the window (like doing "Print Screen" on Windows).

Posted at 11:52AM on Feb 20th 2006 by Nuno Ferreira

22. You all _Need_ IE Tab, https://addons.mozilla.org/extensions/moreinfo.php?id=1419 as mentioned by braxton, the unfortunate truth (gratis) is that not all webpages are designed according to the standards allowing them to be rendered correctly by firefox, instead of having to go and manually fire up ie to view these, what could be more convenient as being able to view these pages in an instance of ie embedded in firefox!?
This extension will change your life :)

Posted at 12:07PM on Feb 20th 2006 by Simon

23. Brower Add Ons
http://broweraddons.friendpages.com
here's my list [for install,click page link above,click Firefox Extentions]
1-click weather,Accessibar,Deskcut,View in I.E.,Plugins list,Image Zoomer,I.E. Tab,G-Mail Manager,Always Remember Yahoo Password,Yahoo ER-mail Previwer
NONE of the above are "developer" extentions,but rather useful surfing tools for the "rest" of us,lol.
Earle
more firefox here
http://mozilla.friendpages.com

Posted at 12:17PM on Feb 20th 2006 by Earle Allen Jr

24. To whomever said Firebug wasn't available to the public yet, you are wrong.

https://addons.mozilla.org/extensions/moreinfo.php?id=1843&application=firefox

Posted at 12:21PM on Feb 20th 2006 by Greg

25. Thanks for the link to IE Tab! Don't know how I'd missed it, but until you posted that link I didn't know it existed. I'm prepared to have my life changed for the better...

Posted at 12:30PM on Feb 20th 2006 by Amber Rhea

26. There's also Google Preview
http://www.thumbshots.org/firefox.pxf from the free thumbnails maker at http://www.thumbshots.org

I think it's neat because it helps me to find the sites quickly.

Posted at 2:56PM on Feb 20th 2006 by Michelle

27. I found a great one to add. It's new. It's called CSS Viewer.

https://addons.mozilla.org/extensions/moreinfo.php?id=2104&vid=12666

Posted at 9:00PM on Feb 20th 2006 by Joshua K

28. Great posts guys! I love all the links, up all night reading and experimenting. Also I think the clear cache in WDT is too nested, when clearing cache I hate to have to go to four nested menus to do a simple object which I have to repeat several times when troubleshooting pages. The clear cache button toolbars helps a lot. Also aardvark http://www.karmatics.com/aardvark/ seems like a cool plugin, I like how it draws boxes over the different coded areas.

Posted at 3:13AM on Feb 21st 2006 by Erik E.

29. Erik said: "I think the clear cache in WDT is too nested, when clearing cache I hate to have to go to four nested menus to do a simple object which I have to repeat several times when troubleshooting pages."

Exactly. That is why I love the Clear Cache Button and Cookie Crumbler. It's not a matter of those features not being available elsewhere, it's that with these extensions, they're there with only a simple click.

Posted at 7:37AM on Feb 21st 2006 by Amber Rhea

30. I'm familiar with the Web Developer toolbar and use it almost all the time, as for the others I haven't checked them out so here goes.. Thanks for the tip.

Posted at 9:30PM on Feb 22nd 2006 by Rob Mirabito

31. E View is very usefull, but to keep the balance you should install "Firefox View" which adds "View this page with Firefox" to IE right-click menus.

Posted at 9:29AM on Feb 25th 2006 by College Student

32. I also have a list of what I believe to be the best and most needed extensions. I try to keep my firefox as minimal as possible. Check it out here: http://www.jail.se/firefox.html

Posted at 3:53PM on Mar 7th 2006 by JF

33. The Web Developer extension has a "Display Ruler" tool that is actually much better than the MeasureIt extension.

Posted at 2:29PM on Mar 15th 2006 by Rich

34. If anyone is interested in learning how to use the InfoLister extension to automatically create a Web page that lists your installed extensions, I put together this tutorial:

http://loadaveragezero.com/drx/installed

If you understand XML and know a little PHP, it helps.

Share your Firefox extension list!

Posted at 12:53AM on Mar 18th 2006 by Douglas Clifton

35. Mozile is also useful for web development. The 0.6 series is a stable release for Firefox 1.5 that has reasonably good text editing features for xhtml pages, including custom special character editing.

Online docs for current 0.6.25 release:
http://mozile.mozdev.org/0.6/docs/WWW/index.html

Posted at 12:10PM on Mar 22nd 2006 by Max

36. learned about measureit over this post, thankies. got mine summed up at http://extensions.whyeye.org in case anybody cares

Posted at 6:34PM on Apr 8th 2006 by jan

37. To DNS Admins and web server admins like myself; I find that the "Show IP" extension saves a lot of my time. It shows the ip address of the current website in the status bar

Posted at 10:03PM on Apr 26th 2006 by Brent Russell