I figured I could weigh in as well, focusing on around the last decade, which, coincidentally, is how old CSS-Tricks is. That just about matches up with my experience in the industry.
It’s no doubt that Firefox was a major player in giving us the web we have today. Just a few years after Firefox’s 2004 debut, Firebug was introduced in 2006.
It’s not an overstatement to say that all modern day DevTools are modeled after Firebug. The influence Firebug had over web development was huge.
DevTools these days are almost taken for granted. They are the primary way we interact with how our code ends up in browsers, but that wasn’t always the case. Before Firebug, there was a whole lot of View Source and essentially guessing what was going on behind the scenes. Firebug made us all far better developers, and it’s influence is still doing that.
... read the whole story at mediatemple.net.