FireFox Add-ons

I love FireFox. One of the great things about it (which now most browsers do) is the ability to expand what the browser does through addons and plug-ins. All freely available from the Firefox Add-on homepage.

So I though "I bet some people would like to know what I think are good FireFox plug-ins ... because I have such an avid following" so here they are. Since I'm a web and graphic developer, most of these pertain to my craft.

Broadband Speed Test and Diagnostics
This extension includes a set of tools for broadband users. It can measure the bandwidth of Internet connections and perform diagnostic tests.

ColorZilla
Advanced eyedropper, colorpicker, page zoomer and other colorful goodies.
With ColorZilla you can get a color reading from any point in your browser, quickly adjust this color and paste it into another program. You can Zoom the page you are viewing and measure distances between any two points on the page. The built-in palette browser allows choosing colors from pre-defined color sets and saving the most used colors in custom palettes. DOM spying features allow getting various information about DOM elements quickly and easily.

CoLT
CoLT makes it easy to copy either a hyperlink's text or both the link and the link's text (in a format you specify). Two handy context-menu items make this possible, and don't add clutter; the items are only visible when right-clicking a link!

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.

FirePHP
FirePHP enables you to log to your Firebug Console using a simple PHP method call. You must have Firebug installed and the "Net" panel enabled to use this extension.

HackBar
Simple security audit / Penetration test tool.

KGen
KGen (Keyword Generator) is an extension that allows you to see what keywords are strong on visited web pages. Than, you can retrieve them for social sharing (tag filling) or webmastering/SEO.

MeasureIt
Draw out a ruler to get the pixel width and height of any elements on a web page.

Palette Grabber
Creates a color palette for Photoshop, Paint Shop Pro, GIMP, Flash, Fireworks, Paint.NET, or OS X based on the current page.

Speed Dial
Direct access to your most visited web sites.

Tweak Network
FireFox has a couple of hidden network settings. With Tweak Network, you can tweak these settings, and you might be able to speed up the loading of web pages. You can also increase the maximum number of simultaneous downloads from a site (the default is only four).

Web Developer
Adds a menu and a toolbar with various web developer tools.

I'm sure there are 101 other plug-ins that people use regularly. I left out a few that are no longer offered that I love (such as Screen Grab!) or ones that I really don't think anyone would give two flips about (Google Gears, Move Media Player, OperaView, Shareaholic, Smart Bookmarks Bar) that you could go and search for at your leisure.