The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Admin Only (10 members)
- Article List Templates (2 members)
- Article stubs (21 members)
- Badges (2 members)
- Bridges (1 member)
- Candidates for deletion (1 member)
- Carriages (3 members)
- Category from wikipedia (7 members)
- Companies (4 members)
- Design templates (1 member)
- Disambiguations (1 member)
- Dovedale Railway Wiki (1 member)
- Draft Articles (1 member)
- External Systems (1 member)
- Features (12 members)
- Forms (6 members)
- General Information (3 members)
- General wiki templates (2 members)
- Graph, chart, and plot templates (1 member)
- Guides (13 members)
- Hidden categories (1 member)
- Image license templates (11 members)
- Imported vocabulary (8 members)
- InfoboxNeue Templates (11 members)
- Infobox templates (1 member)
- Landmarks (13 members)
- Level Crossings (8 members)
- Lists (7 members)
- Locomotives (3 members)
- Lua-based templates (35 members)
- Main page templates (4 members)
- Manual templates (1 member)
- Mathematical function templates (1 member)
- Module (33 members)
- Module documentation (20 members)
- Module documentation pages (1 member)
- Modules imported from Star Citizen (5 members)
- Modules required by modules (30 members)
- Modules that add a tracking category (1 member)
- Modules using data (1 member)
- Navplate Templates (10 members)
- Navplates (4 members)
- Notice templates (4 members)
- Other Vehicles (1 member)
- Pages using Details parser tag (1 member)
- Pages using Tabber parser tag (64 members)
- Pages using duplicate arguments in template calls (1 member)
- Pages with TemplateStyles errors (1 member)
- Pages with broken file links (25 members)
- Pages with ignored display titles (4 members)