The Web Developer Firefox extension is a must have for any web developer. If you haven’t already, download FireFox.

Then grab this ad on, which lets you see the css hierarchy as you put your mouse over objects on the page. You can also automatically populate forms, turnon css classes on the page, to see which class something is. Also outlining of various objects, like table cells.

You can disable cookies, clear cache, etc for that one page. Check it out, see the features here.

This is a great one, and something I wish google had the ability to do:

Search special characters.

This engine, Koders, lets you search various languages and by license type. Want to see an example of how do to something? SImply type in “$hashRef\-\>\{” to see how they do a hashRef in perl.

“To include special search characters, such as ‘*’ as verbatim in your search term, precede the character with a ”, e.g. ‘\*xml*’. Special characters include: + - && || ! ( ) { } [ ] ^ ” ~ * ? : “

Ok, so if you haven’t already come to the conclusion that FireFox is the best browser, here’s another reason to switch from that security hole riddled flimsly-ass Internet Explorer that you’ve been using:

The AdBlocker extension for FireFox!

This little tool allows you to use wildcards and regular expressions to blockout ad servers, including both images and flash ads. It only took me 5 minutes on morningstar.com to wipe out 90% of the ads I see on all sites I’ve visited so far.

After installing FireFox, and installing AdBlock from the url above, you simply right-click on the ads, and select “Adblock Image”, which popups the url, which you can ad a wildcard to “*”…for example “http://*adclick.net*” would block out ALL the ads served by those scumbags. For flash ads, there will be a little “AdBlock” link at the bottom of every flash movie.

Enjoy!