| 207 | | * [http://bioontology.org/ NCBO] |
| 208 | | * [http://bioportal.bioontology.org/ BioPortal] |
| 209 | | * [http://iws.seu.edu.cn/services/falcons/objectsearch/index.jsp semantic search engine] |
| 210 | | * [http://swoogle.umbc.edu/ Swoogle] |
| 211 | | * [http://www.openrdf.org/ Sesame, open source RDF database with support for RDF Schema inference and query] |
| | 207 | * Standard basic vocabularies |
| | 208 | * [http://www.w3.org/TR/rdf-syntax-grammar/ RDF Syntax] |
| | 209 | * [http://www.w3.org/TR/rdf-schema/ RDF Schema] |
| | 210 | * [http://dublincore.org/documents/dces/ Dublin Core Metadata] |
| | 211 | * [http://xmlns.com/foaf/spec/ Friend of a Friend] |
| | 212 | * Ontology repositories |
| | 213 | * [http://www.schemaweb.info/schema/BrowseSchema.aspx Schema Web] |
| | 214 | * [http://bioportal.bioontology.org/ BioPortal] |
| | 215 | * [http://www.wsmo.org/WSMO_ontologies.html WSMO] |
| | 216 | * Other resources |
| | 217 | * [http://bioontology.org/ NCBO] |
| | 218 | * [http://iws.seu.edu.cn/services/falcons/objectsearch/index.jsp semantic search engine] |
| | 219 | * [http://swoogle.umbc.edu/ Swoogle] |
| | 220 | * [http://www.openrdf.org/ Sesame, open source RDF database with support for RDF Schema inference and query] |