title: How to create statistical graphs in WPF, W8 and WP?
body: <p>I've been looking for some libraries and found some very good, but are extra.</p>
  
  <ul>
  <li><a href="http://www.telerik.com/" rel="nofollow">Telerik</a></li>
  <li><a href="http://componentone.com" rel="nofollow">ComponentOne</a></li>
  <li><a href="http://www.devexpress.com" rel="nofollow">DevExpress</a></li>
  </ul>
  
  <p>Need a free and serve to <code>WPF</code>, <code>Windows 8</code> and <code>Windows Phone</code>.</p>
  
  <p>Greeting.</p>