[boucher]

CoffeeScript is a language. It doesn't run natively on node.js, so I don't really see the relationship here.

[tr4nslator]

Indeed, CoffeeScript was built on Ruby, and its REPL on Narwhal.

[extension]

Here's a relationship: if I was going to write all my web apps in JavaScript, I would want something like CoffeeScript to ease the pain.

[amix]

CoffeeScript compiles to JavaScript and it can run natively on V8/node.js (since V8/node.js executes JavaScript)...