Went looking for XML Schema generation tools today, to further my investigations of Castor‘s source generation (which requires a schema to work). XMLSpy appears to be streets ahead of the competition in so many ways. Its not cheap (in fact its very expensive), so a team would have to be doing a LOT of XML / XSL editing to make it worthwhile, but the time saving of being able to take a sample XML document and generate a DTD or Schema from it is huge.

Does anyone know of any open source projects working in the same area?