title: HTML5 Websockets for Realtime Chat app?
body: <p>We were planning to make an HTML5 based chat app using the Websockets technology. </p>
  
  <p>So my question is: </p>
  
  <ol>
  <li><p><strong>Which are the browsers that support <em>Websockets</em> natively currently as of today?</strong></p></li>
  <li><p><strong>If a browser does not support it, what is a possible graceful fallback?</strong></p></li>
  <li><p><strong>Is there a polyfill that can help?</strong></p></li>
  </ol>
  
  <p>Regards,</p>