Windows also had some chat application, hidden within the Windows folder, that allowed you to draw comic book style panels and converse using those over a network. I have never actually seen it used live, but it seemed like an interesting concept.
Honestly Comic Chat is one of the best things to ever come out of Microsoft. I miss it.
Under the hood Microsoft Comic Chat was a relatively generic IRC client. There's an interesting community of folks still randomly using it and you can find questionably legal, definitely unsupported downloads in places.