XML is one of the many elements of a website that users use, but few people understand. We have collected more than 20 tools or resources to help you use XML (note: the following links are in English).
Altova.com - a commercial company that offers a complete set of XML editing tools.
CafeConLeche.org - A large number of XML related resources, instant news and recommended reading list, etc.
Don 't Invent the XML Languages - XML Although easy to customize, this site shows you why it's best to use one of the five versions.
eXist - an open source XML database.
Flash & XML Frequently Asked Questions - A list of frequently asked questions and answers about communication between Flash and XML.
JiBX - use XML to create A framework of Java objects.
Open XML Editor - A free XML editing tools, with A form to test and verify.
STG XML validation - A free XML document validation tool.
Tizag XML guide - all aspects related to XML guide tutorial.
Vex - A visual XML editor, interface like word processing tools.
XML W3C standard - XML official standard.
- XML and database using XML as the database system is A reference.
A XML testing and validation tools.
XML Cooktop - A free XML editing tools running on Windows.
XML Copy Editor - a free XML copy editor with built-in validation.
XML developer center - including downloads, tutorials, community, etc.
XMLFiles.com - A variety of tutorials, examples, links, etc.
XMLmind XML Editor - providing A free and paid version of XML editing tools.
XML schema tutorial - from W3Schools tutorial.
XML.com - Articles and tutorials on all aspects of XML.
Article Source: http://mashable.com/2007/10/07/xml-toolbox/