Sitio oficial del Object Mangement Group. Contiene las siguientes especificaciones: Common Warehouse Metamodel (CWM) - Common Warehouse Metamodel (CWM) Metadata Interchange Patterns (MIP) - Meta Object Facility (MOF) - Model-level Testing and Debugging - MOF 2.0 Facility and Object Lifecycle - MOF Models to Text Transformation Language - MOF Query / Views / Transformations - MOF 2.0 Versioning and Development Lifecycle - Object Constraint Language (OCL) - OMG Systems Modeling Language (SysML) - Ontology Definition Metamodel (ODM) - Reusable Asset Specification (RAS) - tSemantics of a Foundational Subset for Executable UML Models (FUML) - Software Process Engineering Metamodel (SPEM) - Unified Modeling Language (UML) - UML Diagram Interchange - UML Human-Usable Textual Notation (HUTN) - XML Metadata Interchange (XMI) -- Consulta 17/04/2009.