Sure it does. HN is written in "Arc": https://github.com/wting/hackernews https://github.com/wting/hackernews Arc runs on Racket: http://en.wikipedia.org/wik

Sure it does. HN is written in "Arc": https://github.com/wting/hackernews https://github.com/wting/hackernews Arc runs on Racket: http://en.wikipedia.org/wiki/Arc_(programming_language) http://en.wikipedia.org/wiki/Arc_(programming_language) See the "OS" section where it says "runs on the Racket compiler" See also the Arc source code, https://github.com/Pauan/ar/blob/arc/nu/arc https://github.com/Pauan/ar/blob/arc/nu/arc Note the "#lang racket" at the top.