The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Domains (13 members)
- Drafts (2 members)
- Imported vocabulary (8 members)
- Nodes (250 members)
- Nodes without SPKIFP (30 members)
- Noindexed pages (1 member)
- Pages with broken file links (2 members)
- Pages with ignored display titles (4 members)
- Templates (3 members)