Here's a little Node.js/CoffeeScript application I worked on for a contest at a conference: Site: http://apiplayground.org http://apiplayground.org Source: ht

Here's a little Node.js/CoffeeScript application I worked on for a contest at a conference: Site: http://apiplayground.org http://apiplayground.org Source: http://github.com/jashkenas/api-playground/blob/master/src/app.coffee http://github.com/jashkenas/api-playground/blob/master/src/a... The source is interesting because it demonstrates something that you can't do easily with a regular Rails/Django app: nonblocking asynchronous calls to remote APIs, with synchronous responses to the ajax request.