1)   EditiX 3.2
EditiX is an XML editor and XSLT debugger for Windows,Linux and Mac OS X designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT / FO, DocBook and XSD Schemas.
XML, Editor, XML editor, XSLT debugger, XSL debugger, Schema editor, DTD editor, XSL editor, XSL Transformation, XSD editor,

 2)   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,

 3)   EditiX (for Linux/Unix) 3.0
EditiX is an XML editor and XSLT debugger for Windows,Linux and Mac OS X designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT / FO, DocBook and XSD Schemas.
XML, Editor, XML editor, XSLT debugger, XSL debugger, Schema editor, DTD editor, XSL editor, XSL Transformation, XSD editor,

 4)   oXygen XML Editor and XSLT Debugger 7.1
Oxygen is an XML Editor and XSLT Debugger in Java. Can validate XML, XSD, RNG, DTD, NRL, Schematron and XSL. Features XSLT transformation, Unicode support, FOP support, browser preview, automatic DTD generation, code insight and outliner.
XML editor, XSLT editor, XSLT debugger, XQuery Debugger, XML, XSL, DTD, XML Schema, XSD, RNG,

 5)   EditiX (for Windows) 3.0
EditiX is an XML editor and XSLT debugger for Windows,Linux and Mac OS X designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT / FO, DocBook and XSD Schemas.
XML, Editor, XML editor, XSLT debugger, XSL debugger, Schema editor, DTD editor, XSL editor, XSL Transformation, XSD editor,

 6)   EditiX (for Windows / Java VM) 3.0
EditiX is an XML editor and XSLT debugger for Windows,Linux and Mac OS X designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT / FO, DocBook and XSD Schemas.
XML, Editor, XML editor, XSLT debugger, XSL debugger, Schema editor, DTD editor, XSL editor, XSL Transformation, XSD editor,