9 Firefox add-ons I cant live without

First off - I am a rabid Firefox fan...not because its open source (I love that too) but because its a very thin application that you can build out and customize.

Being a marketer, I find that I have rapidly accumulated a ton of tools to help me with everything from search marketing, web design, usability, social networking, and competitive research. I have way too many to list in one article - and some are more of a personal preference than practical, but I thought it would be a good place to share my favorites... and more specifically those integrated with Firefox.

Web Developer 1.1.3

Its safe to say that I use this application daily. It is the ultimate companion for any website designer/developer. This tool is so versatile that covering everything it does would be impossible to do here -it could be its own article. If I had to sum up what I use it for mostly would be for its validation ability, real time style sheet editing, visual guides, and document control. Go here to see everything this awesome tool can do...

IE Tab

I no longer open up separate explorer windows for websites and applications that only support IE (i cant believe they still exist either...) Its also great for doing some quick browser testing. A must have if you are still forced to use IE every once in awhile.

FireFTP

I have grown very close to this add on. I used to use any number of free-ware applications to ftp files into my sites, but since integrating it into my browser - I have not gone back. Its a simple yet powerful tool for those people who have a handful of websites that they want to ftp files into and don't want to leave their browser to do it.

Rankquest SEO Toolbar and Search Status

The combination of these two add-ons are perfect for keeping track of your website and competitor websites in search engines. They offer pagerank and alexa rank in the status bar and one click access to an array of traffic details. If you want to get serious about SEO, these tools are absolutely required.

Colorzilla and Measure It

These little add-ons come in really handy when I am designing. I can click a small eyedropper or ruler in the status bar to easily get everything from website color values to pixel measurements of anything online.

Dictionary Search

If you are anything like me you probably aren't a walking resource library and come across words every day that you don't know their meaning. The cool thing about this little tool is that you can double click any word in a web page and instantly pull up its dictionary meanings in a small pop up window. Efficient!

Google Preview

This is a great little feature that adds a web page thumbnail to Google search listings. Its especially helpful for when you are doing multiple searches and need a quick visual to help guide your clicks.

Like I said, there are alot of others that I use - but these are the cool little ones that make my day a little easier. If you have some that you love share them here!