ERMaster is Eclipse plug-in to make ER diagram. Functionally, Import from data base, Making of table definition book on Excel, Image output, DDL output, etc. are being offered.
Jaxdiag is a small XML Diagramming tool written in Java. Jaxdiag will display, and if selected print, a heirarchical diagram of XML elements based on a selected XML file. The diagram can be expanded and collapsed as required.