The VM itself without the "racket is a language for building languages" thing? Not that I know of. That being said, Racket has a LOT of languages built on it.

For example, this site (Hacker News) is built in Arc, which is built on an old version of Racket.

EDIT: Also worth noting that Racket will move to an even more performant runtime (Chez Scheme) at some point in the future.