1)   Stylus Studio 2006
Stylus Studio 2006 XML Enterprise Edition is an advanced XML IDE. Stylus Studio 2006 adds powerful new features, again pushing the innovation envelope that helped establish Stylus Studio as the premier XML Editor.
Stylus Studio, XML, XQuery, XSL, XSLT, Web Services, XML, HTML, XML mapping, Java,

 2)   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,

 3)   Altova Enterprise XML Suite 2006
The Altova Enterprise XML Suite is a comprehensive XML development toolset that delivers the highest functionality and best product value. It includes Enterprise Editions of XMLSpy, MapForce, StyleVision, and SchemaAgent, plus the new SemanticWorks.
XML, XML editor, XML mapping, Schema editor, DTD editor, XSL editor, ZML Schema, DTD, XSL, XSLT,