The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Hermod Gate Terminals (20 members)
- Hermod Super Gates (0 members)
- Hermod Supergates (3 members)
- Historic Technology (0 members)
- Human Characters (132 members)
- Human Hybrid (0 members)
- Human Hybrid Characters (4 members)
- Human Hybrid Non-Player Characters (3 members)
- Human Non-Player Characters (32 members)
- Human behavior (1 member)
- Human rights templates (1 member)
- Identity (social science) (0 members)
- Identity politics (1 member)
- Incident Reports (0 members)
- Independent Vessels and Facilities (19 members)
- Individualism (1 member)
- Infobox modules (1 member)
- Intricate templates (1 member)
- Japan society and social science navigational boxes (1 member)
- Las Miranonine Sector (7 members)
- List by Organization (3 members)
- List by Player (22 members)
- List by Race (9 members)
- List by Setting (4 members)
- Lodging (5 members)
- Lua-based templates (9 members)
- Lycanthrope Characters (5 members)
- Majority–minority relations (1 member)
- Martial Arts (29 members)
- Mbox and messagebox templates (7 members)
- Medical Conditions (1 member)
- Missing or Dead (21 members)
- Missing or Destroyed (32 members)
- Modern Technology (3 members)
- Modules for general use (1 member)
- Modules subject to page protection (4 members)
- Modules that add a tracking category (2 members)
- Modules that check for strip markers (1 member)
- Music templates (1 member)
- Narcissism (0 members)
- Navboxes using background colours (3 members)
- Navigational boxes without horizontal lists (1 member)
- Needs Setting (2 members)
- Nibara Sector (6 members)
- Non-Player Characters (152 members)
- Non-subject-matter-related article-talk header templates (1 member)
- Notice and warning templates (2 members)
- Novelist navigational boxes (1 member)
- OOC (47 members)
- Omega Tal'us Sector (1 member)