I've heard of people using it for backend. Moreso than even most lisps, Racket is incredibly powerful. It's really good at building DSLs, since the code is just

I've heard of people using it for backend. Moreso than even most lisps, Racket is incredibly powerful. It's really good at building DSLs, since the code is just another data type with the macro system. For the frontend, there's Clojurejs.