| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| Ontology Lookup Service | OLS provides a unified interface to multiple ontologies. | Link |
| BioPortal | BioPortal is the worldâ¿¿s most comprehensive, integrated knowledgebase of biomedical ontologies and controlled terminologies. BioPortal enables users to navigate, visualize, and leverage both individual ontologies and the collective knowledge suggested by its entire knowledgebase of more than 800 ontologies. It provides specialized tools that employ novel layouts and animation to offer cognitive support to users trying to understand the complexities of large ontologies within the confines of the two dimensions offered by a Web browser. | Link |