The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Archived (68 members)
- EMSResources (4 members)
- EquipmentDocs (8 members)
- Governance (5 members)
- Hidden categories (2 members)
- MeetingMinutes (299 members)
- Pages with broken file links (7 members)
- ResearchNotes (7 members)
- SupportingPeripheral (60 members)