1)   Xselerator 2.0.44 It's got everything an XSLT Editor should have plus a bit more like Intellisense and tag auto-complete! It's also half the price of XMLSpy... so it's great value. A 30 day free trial is available. 2)   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. 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. 4)   StyleVision Enterprise Edition 2006 Altova StyleVision 2006 Enterprise Edition is the ultimate visual stylesheet designer for transforming XML and database content into HTML, PDF, and Word/RTF output and creating e-forms. StyleVision supports XSLT, XSL:FO, CSS, and all major databases. 5)   Ektron eWebEditPro+XML 4.2 Ektron eWebEditPro+XML is a browser-based editor that empowers business users and developers to author both HTML and XML content in a smart Web forms-like word-processor, hiding the complexities of XML. Provides both validation and schemas. 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. 7)   monoPlane Web Designer 0.02 Download and build your XML/XSL based site today. Intuitive, flexible. Free. Live demos and working sites available. Beta-testers, comments, suggestions welcome. 8)   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. 9)   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. 10)   Authentic 2006 Altova Authentic 2006 is a FREE XML and database content editor that allows business users to view and edit data without being exposed to the underlying technology. It is ideal for use as the front end of custom XML and database centric applications. 11)   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.