Date: Apr. 9, 1999
Link: http://www.xmltree.com/
Source Author or Organization: Wavefront Limited

Excerpted from web site: "xmlTree takes an entirely new approach to categorising XML data resources. It is built from the ground up using XML to describe not only what resources are available, but also the parameters needed to use them, and the output that they produce. xmlTree lists 61 resources in 20 categories."

"Soon the resource listings from xmlTree will themselves be available in XML. We are defining DTDs which describe the tree structure and also the resources listed. This will make it possible for agents identify resources and then go on to query them using the parameters they require."