The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Abilities (306 members)
- Abilities and Skills (2 members)
- Assault Ranged Weapon Mods (3 members)
- Assault Ranged Weapons (3 members)
- Background set images (20 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Characters (9 members)
- Citation needed (0 members)
- Cleanup (0 members)
- Codex Page (3 members)
- Community (4 members)
- Copyright templates (12 members)
- Deep Sky Derelicts (25 members)
- Deep Sky Derelicts Wiki (8 members)
- Derelicts (1 member)
- Derelicts images (16 members)
- Disambiguations (0 members)
- Documentation templates (3 members)
- Effects (1 member)
- Energy Blade Mods (4 members)
- Energy Blades (3 members)
- Featured images (12 members)
- Formatting templates (20 members)
- Front page sections (4 members)
- General Melee Weapon Mods (2 members)
- General Weapon Mods (2 members)
- Glossary (3 members)
- Guides (1 member)
- Heavy Melee Weapon Mods (6 members)
- Heavy Melee Weapons (3 members)
- Hidden categories (10 members)
- Images (7 members)
- Images needing improvement (0 members)
- Infobox templates (2 members)
- Item images (48 members)
- Items (16 members)
- Legal notices (3 members)
- Light Ranged Weapon Mods (2 members)
- Light Ranged Weapons (3 members)
- Media (2 members)
- Medical Tool Mods (3 members)
- Medical Tools (4 members)
- Mental Tool Mods (4 members)
- Mental Tools (2 members)
- Navigation templates (3 members)
- Notice templates (15 members)
- Pages to be merged (0 members)
- Pages to be moved (0 members)
- Pages with broken file links (0 members)