oXygen XML Editor is the best XML editor available, with a large number of users ranging from beginners to XML experts. It is the only XML tool that supports all the XML schema languages. The XSLT and XQuery support is enhanced with powerful debuggers and performance profilers. You can use
XSLT transformation, browser preview, automatic DTD generation, syntax highlight and code insight. Easy to manipulate XML documents. Easy to query xml content using Xpath console. Simple, clear, intuitive interface. Low cost, with product life time support.