Well, I hadn't heard about Crystal until... just now. So projects like this are great marketing.

I'm reading up on it and liking what I'm seeing so far. This could be a great Golang (which I detest) replacement for me when I need to write a small, native program. Also, the Ruby-esque syntax is a win. I've always thought Ruby was a nicer language than Python. Too bad Ruby never grew much of a dev community outside of Rails.