Lots of web designers rely on Chris Pedrick’s Web Developer extension for Firefox. It’s one of many reasons Firefox is such a popular browser for web development. I’ve used this Firefox every week for years. We covered this in a tip back in 2006:
Archive Tip: Great Web Developer extension for Firefox.
So you may appreciate my happiness at discovering the greatly improved web inspector Apple has built into the new Safari 4 beta. Apple’s marketing claims this is the best set of development tools ever included in a browser. As I get to know Safari 4 better, I’m inclined to agree.