1)   XMLwriter XML Editor 2.6
XMLwriter is a powerful XML editor for Windows designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT and XSD Schemas.

 2)   Bonodi XML Editor 2.12
Bonodi XML Editor is a multilingual XML editor for MS Windows 98/Me/NT4/2000/XP. You can edit XML documents in English, Japanese, Chinese, Korean, Russian, Greek, Thai, Hebrew, Arabic, and other languages on any language version of MS Windows.

 3)   KaliNews 2.06
Press writers tool integrating News monitoring for Press Agencies news wires using NewsML. Create articles in XML, metadata, manage related formats from anywhere, send to editor via mail, ftp, exports to prepress NewsML , NITF, InDesign

 4)   Altova Professional XML Suite 2006
The Altova Professional XML Suite is a comprehensive XML development toolset that delivers tremendous functionality at a special price. It includes Professional Editions of XMLSpy, MapForce, StyleVision, and SchemaAgent, plus the new SemanticWorks.