Easy to forget that now.
Also, did you know IE6 pioneered the browser web dev tools? IE6 was the first browser you could debug your JavaScript, css and html, which was copied by firebug about 12 months later. I can't even remember what it was called now, IE Dev toolbox? Something strange, you had to download it separately.
And Firebug and Chrome Dev tools copied it almost verbatim. I've never seen any sort of acknowledgement of just how much the community owes to that early tool. The announcement blogs about it were still accessible a few years ago.