title: Best open-source javascript tree?
body: <p>Could you propose <strong>open source, but commercial-friendly licensed (non-GPL)</strong> Javascript trees?</p>
  
  <p>Please take into account that I need it for an existing Web application, so I am not sure whether other tools such as GWT or Echo would be appropriate.</p>
  
  <p>I have already checked:</p>
  
  <ul>
  <li>Dojo Tree</li>
  <li>jQuery.Dynatree.js (JQuery)</li>
  <li>JSTree (JQuery)</li>
  <li>Mif.Tree (Mootools)</li>
  <li>YUI Tree (Yahoo User Interface)</li>
  </ul>
  
  <p>I have ruled out DHTMLX and ExtJS (both GPL, they require the whole project to be GPLed).</p>
  
  <p>Thanks in advance for your suggestions!</p>
  
  <p><strong>UPDATE:</strong>
  This question is old, the above list should no longer be taken into account. I'm sure there are more and better alternatives now.</p>