[d3Xt3r]

And a Javascript capable HTML4 browser, and a decent-looking and performant GUI desktop too.

It's a shame QNX (desktop) died, used to be way more performant and stable compared to Linux or anything else back in the day.

[userbinator]

The problem is it wasn't really compatible with anything else, at a time when DOS/Windows and Unix-likes were the most common.