Online xml validating parser
RELAX NG is also an International Standard (ISO/IEC 19757-2). It is Part 2 of ISO/IEC 19757 DSDL (Document Schema Definition Languages), which is maintained by ISO/IEC JTC1/SC34/WG1. Maneki Neko, Xerces parser configuration that supports RELAX NG validation. Trang aims to produce human-understandable schemas; it tries to preserve all aspects of the input schema that may be significant to a human reader, including the definitions, the way the schema is divided into files, annotations and comments. RELAX NG Workshop sample client application also available.
RELAX NG Compact Syntax, OASIS Committee Specification, 21 November 2002. Recent versions of libxml2 (at least 2.5.5) support RELAX NG validation. Libxml2 is included in most modern Linux distributions. Definitive specification for RELAX NG using the XML syntax. ISO/IEC 19757-03 Document Schema Definition Language (DSDL) -- Part 2: Regular-grammar-based validation -- RELAX NG. RELAX NG was based on TREX designed by James Clark and RELAX Core designed by MURATA Makoto. project for extending RELAX NG has started in ISO/IEC JTC1/SC34/WG1.