The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Article management templates (4 members)
- Article stubs (0 members)
- BlogListingPage (0 members)
- Blog posts (1 member)
- Browse (4 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Category templates (4 members)
- Cipher Solutions (4 members)
- Ciphers (5 members)
- Community (5 members)
- Content (1 member)
- Copyright (0 members)
- Crime Scenes (2 members)
- Disambiguations (0 members)
- FBI Suggestions (1 member)
- Files (1 member)
- Forums (6 members)
- General wiki templates (32 members)
- Help (5 members)
- Help desk (2 members)
- Hidden categories (2 members)
- Image wiki templates (9 members)
- Images (0 members)
- Infobox templates (11 members)
- Lists (1 member)
- New pages (0 members)
- Organisation (0 members)
- Organization (8 members)
- Pages proposed for deletion (0 members)
- Pages with broken file links (1 member)
- People (3 members)
- Policy (2 members)
- Poo poo (1 member)
- Site administration (4 members)
- Site maintenance (4 members)
- Suspects (2 members)
- Template documentation (62 members)
- Templates (13 members)
- Theories (2 members)
- Tools (3 members)
- Top Level (9 members)
- Watercooler (2 members)