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MOSO Xmplify is a powerful new XML editor built specifically for Mac OS X, with DTD and XML Schema-based auto-completion, automatic document validation, XSLT and XPath support, live HTML preview and much more.

Free cross-platform web-based Online XML Editor, runs on Linux, Windows, Mac, FireFox, Chrome, IE. Edit XML schema or document. No user registration required.

oXygen XML Editor is a cross platform XML Editor providing tools for XML authoring, XML conversion, XSL, XSLT, XQuery, XML Schema, DTD, Relax NG and Schematron development, SOAP and WSDL.

Wonder How To is your guide to free how to videos on the Web. Search, Browse and Discover the best how to videos across the web using the largest how to video index on the web. Watch the best online video instructions, tutorials, & How-To...

Java XML Editor, MQSeries client, Schema, XMLSpear, XML Tree Editor, binary plist editor,property list editor, real-time validation, free download, best free XML editor

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

XML.com, where the XML community shares XML development resources and solutions, features timely news, opinions, features, and tutorials; the Annotated XML specification created by Tim Bray; authoring tools, XML developer resources, interactive forum...

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The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.