This is 2001, pre-firefox. If you want a frightening thought then try it's main competitor: Netscape Navigator 4!
I remember Opera was my browser of choice around that time, it was a seriously nippy browser back then, way ahead of it's time. Unfortunately the fact that there was no free version prevented them from getting a decent share of the browser market. Later on, they did eventually release a free version but with an ad banner in the navigation bar (of course Opera is now completely free and doesn't have any ad banner).
We're talking 2001 here, when Firefox was still mozilla/browser (and had no own name), an experimental branch of Mozilla, back when Venkman was the one and only debugger for Mozilla. KDE 2.0 (first release including KHTML), Opera 6 (new feature: unicode support), OSX 10.0 (and 10.1) bundling IE5/Mac.
The alternative to MSIE was Netscape Communicator 4 (which had been stagnating since 1998), Mozilla 1.0 itself was still more than a year away.
Now there's a frightening thought.