This deliverable presents a set of structured metadata for evaluated and certified ontologies. This set of metadata for describing ontologies has taken as input the OntoRoadMap ontology from the OntoWeb () project. This deliverable also includes a survey of metadata and standards, and an identification widely used of metadata examples (Dublin Core, LOM metadata, FOAF, BibTeX, etc.). The document after a brief description of the main objectives of the tasks 2 and 3 of the Woorkpackage 1.3; Section 2 presents the state of the art on metadata and standards; Section 3 lists several metadata examples which include the description, a subset of elements and the references; Section 4 presents the proposed metadata for describing ontologies. These metadata have been classified depending on their features: syntactical, semantical, heuristic and pragmatic, and contextual; Section 5 includes the SWPATHO ontology and the OntoWeb ontology annotated with the metadata defined in the previous section; Section 6 presents a short description of the Oyster system and section 7 explains the Knowledge Web standardization strategy.