Tree Navigation Web Part
AATreeNavigator SharePoint Web Part is a web part to display Hierarchical Data in TreeView format in WSS 3.0 or SharePoint 2007. It is very common to see hierarchical data in many of the forms used in web applications. AATreeNavigator Web Part is used to display this data in SharePoint.It supports all properties of TreeView Web Control. You can change the property of TreeView display using AATreeView.XML file.