GoXML is an XML context-based Search Processor that enables indexing, storing and searching of XML data. View a demo and links galore.
Read an overview of Microsoft's platform for XML Web services, order books, review available training services, and explore the developer center.
While Extended Mark-up Language (XML) platform is still being developed, designers can check their code compliance with this free service.
View the specs and learn about this set of implementations for running software on disparate platforms. With a discussion board and mailing list.