Date: Sep. 21, 2000
Link: http://www.mathweb.org/~paul/DTDexplorer/
Source Author or Organization: Paul Libbrecht

DTDexplorer is a Java applet that loads a Document Type Definition (DTD) and displays the parent/child relationships, allowing the user to view the structure. It requires a Java virtual machine to run, and a version is downloadable for the UNIX, Macintosh and Windows platforms. DTDexplorer is delivered under the GNU general public license.