1)   dhtmlxTree - JavaScript Tree Menu 1.3
Cross-browser JavaScript Tree Menu with XML support, rich API and dynamical data loading via Ajax. The tree has checkboxes, context menu, drag-and-drop and editable items. There are CF and JSP tags for dhtmlxTree, as well as ASP.NET custom control.

 2)   dhtmlxToolbar 1.0
dhtmlxToolbar is a free JavaScript Toolbar with high functionality, XML support, cross-browser compatibility and rich API. Completely customizable - you can freely define visual appearance of this DHTML Toolbar by simply changing its parameters.

 3)   dhtmlxMenu 1.0
dhtmlxMenu is a customizable JavaScript menu with high functionality, XML support, cross-browser compatibility and rich API. You can freely define visual menu appearance and complexity by simply changing menu parameters. Free for non-commercial use.