Firefox Addons for Web Developers

I love firefox and it's enormous range of addons! While developing themes and styles for WordPress I rely heavily on the addons detailed below. All the addons featured are crossplatform and I've used them on both Windows and Linux, which I use for the majority of my web development. Hope you like my list and if you're a web developer please share you're favorite addons with us!

Web Developer

My no1 Firefox addon for web development. With Web Developer you can outline divs, see block sizes, find element information, resize browser windows, view/edit the css and much more. Access the wide range of tools either from the new toolbar or by right clicking to access the context menu. Absolutely essential for theme or style design!

Fire FTP

Upload files from your computer to your server quickly and efficiently, through an easy to use interface integrated into your firefox browser. FireFTP also includes more advanced features such as: directory comparison, syncing directories while navigating, SSL encryption, search/filtering, integrity checks, remote editing, drag & drop, file hashing, and much more!

Screen Grab

Screengrab saves entire webpages as images. It will save what you can see in the window, the entire page, just a selection, a particular frame... basically it saves webpages as images. Great for making screenshots of your new theme of style!

Here's one I haven't used as much as the addons above but I include it here as many web developers love it!

Firebug

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.