queXML comprises of an XML Schema and related XML stylesheets. To write a queXML document, all you need is a text editor, but to verify that your XML document is valid, and to apply the stylesheets - you will require either a complete XML editor or a text editor and XML conversion software. Also, to produce an PDF (paper) version of a questionnaire, you will require an XML:FO to PDF tool such as Apache FOP and the barcoding tool Barcode4j.
The queXML package contains an example queXML document that you can use as a template to produce a questionnaire of your own.
queXML is available to download from SourceForge
Developers note:
The queXML SVN repository is also available via SourceForge here: