The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Routing (24 members)
- Routing/en (14 members)
- Routing/fr (7 members)
- Routing/nl (12 members)
- Style guide (1 member)
- Template:Documentation (5 members)
- Template:Mbox (3 members)
- TemplateData documentation (3 members)
- Template Management (1 member)
- Template documentation (61 members)
- Template documentation/en (1 member)
- Templates (4 members)
- Tools (6 members)
- Tools/en (5 members)
- Tools/fr (4 members)
- Tools/nl (6 members)
- Tutorials (8 members)
- Tutorials/en (8 members)
- Tutorials/fr (6 members)
- Tutorials/nl (7 members)