[bballbackus]

I don't like that Coffeescript requires a compiler to create the actual javascript, but that they don't offer a cross-platform solution for this compiler. Yes, you can get the compiler working on Windows with Cygwin, but a better solution would be a windows compatible compiler that didn't make me go through the hassle of setting up Cygwin in the process.

[vindvaki]

You don't need Cygwin to "install" CoffeeScript. You can even run it in your browser:

http://jashkenas.github.com/coffee-script/#installation

And Node.js can also be run natively:

https://github.com/joyent/node/wiki/Building-node.js-on-ming...

[TrevorBurnham]

There's also a Ruby wrapper for CoffeeScript, and several projects aimed at Windows that use Java or .NET. A good round-up is at http://stackoverflow.com/questions/3175561/coffeescript-on-w...