There's two JS libraries using the term "ristretto", we've all heard of mocha. "espresso" seems to be a disused node.js tooling library, similarly, "flat white" is a disused CMS, "latte" is a failed CoffeeScript competitor. "Americano" seems to be a slightly more used tooling repository.

I guess the less than inspiring names "short black" and "long black" are available? :)