XML editor and XSLT debugger for Windows, Linux and Mac OS X. Provides editing support for XML, DTD, XHTML, XSLT, XSD, XML RelaxNG, SVG, MathML and XML FO [Commercial]
Cross-platform and multi-purpose XML editor, XSLT debugger and Visual Schema Editor. Provides editing support for XML, DTD, XHTML, XSLT, XSD, XML RelaxNG, SVG, MathML and XSL FO [Commercial, 30-day trial].