The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Funding Sources (1 member)
- Internationalization templates (2 members)
- Languages pages (2 members)
- Languages pages without translations (2 members)
- Lua-based templates (6 members)
- Lua String-based templates (2 members)
- Pages with broken file links (27 members)
- Pages with non-numeric formatnum arguments (3 members)
- Pages with script errors (11 members)
- Pages with too many expensive parser function calls (1 member)
- Quotation templates (2 members)
- Semantic markup templates (1 member)
- TemplateStyles stylesheets with errors (1 member)
- Workaround templates (2 members)