Oxygen is a multi-platform XML Editor, XSLT/XQuery Debugger and Profiler written in Java. It supports XML, XSL, XQUERY, FO, XSD, RNG, RNC,NRL, DTD, Schematron, WSDL and CSS documents. It offers a powerful and intelligent code insight that guides the user to write valid XML content. The code insight can be driven by a DTD, an XML schema, an Relax NG schema or by the structure of a partial edited document. It has FOP and full Unicode support.
Version 7.1 of the XML Editor adds support for Berkeley and eXist XML Databases, an XSL templates view for easy navigation through the edited XSL stylesheet and an XPath builder view for editing complex XPath expressions. Effort has been made to improve the loading time and to reduce the memory usage especially for large documents. Multiple modifications were made to improve the general usability of the editor.