The Web Developer extension for Firefox is a tool that any respectable web master can not live without. It gives you all the gadgets and gizmos you might need to do any number of tasks. The best thing about it is that it is so small yet so powerful.

The features for the Web Developer extension go on and on. From disabling certain Web page services to re-sizing your browsing window to a new size, there is nothing missing from this package. One of my favorite features though has to be the built in CSS editor.

By just a few clicks, you can view all the CSS in a side frame. If you were working on a Web page that was currently saved to your own machine, you can use this feature to edit the Web page quickly all inside one browser window.

So if you have Firefox and you spend as much time as I do buried inside of HTML code, give it a shot. I promise that once you use it once, you will never be able to live without it.