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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...

Solutions for Java developers

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.

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

Altova XMLSpy XML editor, plus other leading XML, data management, UML, and Web services software tools for application, web site, and database development, data conversion, and more.

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.

JetBrains, creator of the best Java IDE - IntelliJ IDEA - is a technology-leading software development firm specializing in the creation of intelligent development tools.

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Oracle Documentation

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

Learn about XML Schema: technical details, advantages, examples, applications, tools for working with XML Schemas, and more.