Twitter-async is a wrapper for Twitter's OAuth API which provides asynchronous calls.

Authors
   * jmathai
   * arikfr 
   * ericmmartin
   * tahpot
   * dingram

Documentation:
   * http://wiki.github.com/jmathai/twitter-async

Blogs
   * http://www.jaisenmathai.com/blog/2009/04/30/letting-your-users-sign-in-with-twitter-with-oauth/
   * http://www.jaisenmathai.com/blog/2009/03/31/how-to-quickly-integrate-with-twitters-oauth-api-using-php/
   * http://www.1stwebdesigner.com/tutorials/twitter-app-oauth-php/

Live Examples
   * http://www.jaisenmathai.com/sign_in_with_twitter/start.php