Best open source javascript tree?

Question

Could you offer open source, but with commercial licenses (without GPL) Javascript trees?

Please note that I need this for an existing web application, so I'm not sure if other tools like GWT or Echo would be suitable.

I already checked:

• Dojo Tree
• jQuery.Dynatree.js (jQuery)
• JSTree (jQuery)
• Mif.Tree (Mootools)
• YUI tree (Yahoo user interface)

I excluded DHTMLX and ExtJS (both GPLs, they require the whole project to be GPLed).

Thanks in advance for your suggestions!

UPDATE: This question is old, the above list should no longer be taken into account. I am sure that now there are more and better alternatives.

Answer 1

I use this one:

http://bassistance.de/jquery-plugins/jquery-plugin-treeview/

Answer 2

jsTree seems better.

• Open Source: MIT License
• Features: lazy loading, context menu, keyboard navigation, drag and drop, built-in editing, customizable, CDN.
• Stackoverflow has 1,551 questions tagged with jsTree
• Alexa page level jstree.com is better than others

Other close rivals:

• Fancytree (updated version of Dynatree)
• zTree