Online validator for checking a W3C XML DTD or schema for conformance to current specifications.

Java tool to validate XML documents against several kinds of XML schemata. It supports RELAX NG, RELAX Namespace, RELAX Core, TREX, XML DTDs, and most of XML Schema.

Alphaworks software that takes as input an XML Schema written in the W3C XML schema language and diagnoses improper uses of the schema language

Details of the open-source, cross-platform W3C XML Schema to C++ data binding compiler.

Free tool to translate a DTD into a W3C XML Schema

Tools for visual XML schema editing, conversion, validation, schema documentation generation and XML schema mapping.

Easy-to-use tool for compiling XML schema into C++ classes.

An XML Schema to C/C++ data binding tool

Validates XML documents such as XHTML against the appropriate schemas.

Transforms XML Schema files into cross-referenced, hyperlinked HTML documents and provides a detailed functional report for each schema component.