I don't really know Racket. But from what i've seen, it's mostly sold as a language to create new languages in. Rascal on the other was designed to analyse exis

I don't really know Racket. But from what i've seen, it's mostly sold as a language to create new languages in. Rascal on the other was designed to analyse existing languages. They wanted to have a single framework to analyse both Java and C++ for example. The goal was to be able to easily add new syntax and reuse semantic analysis, I believe.