request - http request module

https://github.com/mikeal/request

stream http responses to files:

request('http://google.com/doodle.png')
  .pipe(fs.createWriteStream('doodle.png'));

or just use as a http client, with callbacks

request.post('http://localhost:5984/foo', { json: { foo: 'bar' }, function(err, res, body) {
  console.log(body);
});