1)   XMLSpy Home Edition 2006
Altova XMLSpy 2006 Home Edition is a FREE entry level XML editor and developer tool for designing and editing XML applications. XMLSpy Home Edition supports Eclipse integration and is ideally suited for hobbyists, beginning developers, and students.
XML, XML editor, Schema editor, DTD editor, XSL editor, XSL Transformation, XSD editor, Schema, XML Schema, W3C Schema,

 2)   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.
xml, xml editor, xml software, xml tool, schema editor, dtd editor, xsl editor, xsl transformation, xsd editor, schema,

 3)   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.
XML, XML editor, XML software, XML mapping, Schema editor, DTD editor, XSL editor, W3C Schema, DTD, XSL,