Sorry I wasn't clear. I first tried to use a more featured framework, Lucky or Amber but only Kemal compiled fast enough. I'm pretty sure they all would have executed the application fine.

I have nothing against Crystal. In fact I still think it's great, just not for the kinds of things (e.g. web dev) that I would do in languages like Ruby, Go, or Java. Similarly, Pony is a fantastic language (Rust done right IMO) but I don't have a use for what it/Rust delivers in my typical projects. In short, I think Crystal could benefit from better/clearer positioning, as the digressing discussions in these comments show.