myGrid has ontologies for semantic service discovery (the myGrid ontology) and for managing process provenance (the workflow run ontology). They have in general been authored in OWL using Protégé 4.
The myGrid ontology is used by the BioCatalogue (a curated catalogue of Life Science Web services). BioCatalogue uses terms from the myGrid ontology to tag the catalogued services. In the future, BioCatalogue will support other ontologies as well, such as EDAM.
Ontologies are being used extensively to support the description of Taverna components.
BioCatalogue in integrated with the Taverna Workbench enabling you to perform a full BioCatalogue search and include services within your Workbench and workflows.