dhtmlxTree
by Scand

  Free only for non-commercial use.
dhtmlxTree is a JavaScript Tree component that helps you to represent your hierachically organized data the best way.
Light-weight , high-performance, having clear and comfortable API, well documented this DHTML tree is highly useful for representation of data in commercial applications or on your web site. Such features, as dynamical loading of items by opening of subnodes, gives possibility to satisfy client's requirements to display really huge amounts of data fetched from database.
The tree state can be saved/restored in in browser's cookies so when user visits the page next time, he finds the tree in the same state he left it.
dhtmlxTree is a platform independent solution - it's compatible with all main Web-browsers for Windows, Mac OS X, Linux or Unix. You can customize "look and feel" of the tree to suit best your needs - use font style & color and icons design to create your unique style. You can use tree without icons and include multi-line tree items.
Dynamic data loading and suitable component API allows you to control it at runtime.
dhtmlxTree has search functionality, drag-&