Racket is a scheme derivative, actually it consists of several languages including some domain specific ones, that all are compatible with each other. It also has a _very_ nice C foreign function interface (much better than Haskells for example).
Thanks for the note. When I first heard "typed racket" I thought: "oh no, an obscure dialect of an already obscure language" and I was slightly disappointed, but now I understand that typed racket is not a derivative of racket, but rather racket is a domain of languages including typed languages. This makes it much more interesting to me. Thanks for the note.
