Whoami-twitter is a project mainly written in JavaScript, it's free.
return your remote ip address from an express app after authenticating on twitter
This is basically my Twitter Hello World app to test out heroku's experimental node.js support.
It uses express and express-auth.
% heroku config add TWITTER_CONSUMER_SECRET=<secretfromtwitter> TWITTER_CONSUMER_KEY=<keyfromtwitter>
% git push heroku master