- Protocol for Web Description Resources
The Protocol for Web Description Resources (POWDER) allows metadata to be associated with groups of resources such as those found on a Web site.
- WSMO-Lite Ontology
WSMO-Lite is a lightweight approach to the semantic annotation of Web service descriptions, defined by the STI2 working group Conceptual Models for Services
- xAPI Controlled Vocabulary Ontology
This ontology contains a list of the classes and properties that can be used when for creating and publishing a controlled vocabulary dataset for xAPI communities of practice.
- XHTML Vocabulary
This is a vocabulary collection utilized by XHTML Family modules and document types using XHTML Modularization, including XHTML Role and XHTML + RDFa as defined in rdfa-syntax.