So, I issue a retraction that's the opposite of my prior claims: Rackets features, libraries, and tooling were all developed by academics or Racket community with feedback or justification from real-world projects (eg web servers) or use in industry. Purely Racket community working within the Racket community on day-to-day, academic or leisurely needs.

I'll revisit the others on the list to see which of them might be the same.

"And far be it from me to encourage you to stop mentioning Racket!"

I wouldn't anyway. You all have earned mention with the right mix of attributes in the project. :)

"Instead, we Racketeers are all software developers, and we make Racket the language we want to program in. "

That makes sense. Scratching an itch as the old FOSS motto goes. I did the same thing with a 4GL a long time ago. I understand the motivation. Staying with such a project for many years is an angle I apparently haven't caught up to. Regrettably. ;)

"The most significant Racket application at the beginning (and maybe still) is DrRacket, the IDE. Developing that has led to everything from FFI improvements to contract systems,"

That makes sense. It looks like a very complex program. It would stretch the language into programming-in-the-large and robustness territory by itself.

"I expect the same to be true for many other real working systems developed by academics."

I'll keep it in mind. Thanks for your time and information on the Racket project.