The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Accomplishments (99 members)
- Achievement icons (31 members)
- Affiliation (3 members)
- Affiliation Artwork (5 members)
- Agent Artwork (25 members)
- Albion (28 members)
- Auxiliary (1 member)
- Candidates for deletion (5 members)
- Candidates for speedy deletion (0 members)
- Captain (21 members)
- Cargo (23 members)
- Cargo Artwork (20 members)
- Cargo icons (38 members)
- Character Artwork (62 members)
- Character icons (51 members)
- Chart Segment (27 members)
- Charts (5 members)
- Chief Engineers (6 members)
- Citation needed (0 members)
- Cleanup (1 member)
- Community (5 members)
- Copyright templates (10 members)
- Crew (23 members)
- Disambiguations (0 members)
- Discoveries (8 members)
- Discovery Images (37 members)
- Documentation templates (48 members)
- Eleutheria (24 members)
- Engine (3 members)
- Events (220 members)
- Facet Artwork (49 members)
- Facet icons (54 members)
- Facets (66 members)
- First Officers (5 members)
- Formatting templates (37 members)
- Front page sections (8 members)
- Future Content (0 members)
- Gameplay (13 members)
- Hidden (550 members)
- Hidden categories (0 members)
- Hubs (4 members)
- Icons (651 members)
- Images (1 member)
- Images needing improvement (0 members)
- Infobox templates (10 members)
- Items (8 members)
- Journal (255 members)
- Large Armament (7 members)
- Large Artwork (262 members)
- Legal notices (3 members)