XMetaL
- A document-centric authoring tool for XML and SGML. [Commercial]
- http://na.justsystems.com/content.php?page=xmetal

XML:Wrench
- Windows editor and tools for XML and other file formats. Includes tools for validation, importing from HTML, and transforming using XSL(T).
- http://www.xmlwrench.com/

Syntext Serna XML WYSIWYG Editor
- Syntext Serna is a customizable, multi-platform, XSL-driven WYSIWYG XML content editor. It looks and works like a conventional word processor, and supports Docbook, DITA, and TEI.
- http://www.syntext.com/products/serna/index.htm

Altova XMLSpy XML Editor
- Popular XML Editor and IDE including XML Schema designer, code generator, file converters, debuggers, profilers, support for XSLT, XQuery, WSDL, SOAP, plus .NET and Eclipse integration. [Commercial, 30-day trial]
- http://www.altova.com/products/xmlspy/xml_editor.html

Antenna House XML Editor 3.2
- The Antenna House XML Editor 3.2 is a software application that combines two tools. One is for editing XML documents. The other is a parsing application, which verifies if an XML document and DTD is correct by comparing it with the XML specification. It s
- http://www.antennahouse.com/product/XMLEditor/spec.htm

Stylus Studio
- Sonic Software's platform for an XML development environment that includes an XML Schema editor, XSLT editor, XML-XML mapper, debugging and document wizards. [Commercial]
- http://www.stylusstudio.com

XML Marker
- Offers a tree-table-text interface eith both hierarchical and tabular style views.
- http://symbolclick.com

EditiX
- 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.
- http://www.editix.com

Tagfree2000
- Contains XML, DTD, and SMIL editors. [Commercial]
- http://www.tagfree.com

XMLmind XML Editor
- XXE, for short, is a full-fledged XML 1.0 editor featuring a word processor-like view (CSS2 styled). It has been created to make technical persons comfortable and productive at editing XML documents and XML data. [Open Source]
- http://www.xmlmind.com/xmleditor

epcEdit
- Validating XML/SGML document editor for Windows, Linux, and Solaris. [Commercial]
- http://www.epcedit.com/

XmlTool
- Mouse-based editor for XML files, that generates HTML, XSL, DTD files, and gets Database structure and queries. [Shareware]
- http://www.xml.com/pub/p/17

XMLWriter
- A validating XML text editor for Windows that supports XML, XSL, DTD, CSS, and HTML files. [Shareware]
- http://xmlwriter.net/