Famous /prog/riders

We sure talk about programming a lot. But what is the most well-known software written (or at least worked on partially) by someone who posts here?

I wouldn’t expect any Bill Gates or Mark Zuckerberg tier person to be here, but at least some moderately well-known or successful person who has made a widely-used app/program/library.

Did Terry Davis ever post on /prog/? I guess he is sort of famous, but in a bad way. I hope there is a more positive example.

I guess the bubble sort algorithm made the rounds for a bit, so whoever posted that.