The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- AnnotationProperty (8 members)
- Category (Class) (3 members)
- Data property (20 members)
- Entity (2 members)
- Iframe (1 member)
- Imported vocabulary (8 members)
- Item (18 members)
- OSL/Infrastructure/Template/User (11 members)
- Host (0 members)
- Country (0 members)
- Chemical substance (1 member)
- Remote File (1 member)
- Building function (0 members)
- Keyword (1 member)
- Strict Participants Process Type (1 member)
- Shipment (0 members)
- Dataset schema (0 members)
- Event with People (4 members)
- Laboratory process (2 members)
- Wiki File (61 members)