HEATKEYS

The Stylus Studio XML Editor is an innovative XML IDE providing advanced XML development tools for XML, XSL, XSLT, XML Schema, DTD, SOAP, WSDL, SQL/XML, XML mapping, Web services and XQuery, simplifying XML data integration.

Extreme Translator - XML, EDI X12, Edifact, CSV flat file translator

EDI software tools that parse, construct, acknowledge, validate and secure EDI files. A component, which acts as an EDI translator and generator.

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.

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.

ediFabric is a .NET library to convert EDI documents into typed .NET objects and vice verse. 
It can serialize\deserialize to\from XML.

Oracle Documentation

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...

A web-based XML validator. Can be used for free. Validates XML files, prompts the user for referenced files (e. g., XSD), shows good error messages.