The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- OUAT (5 members)
- OathWielders (79 members)
- Operation Verdant Pyramid (12 members)
- Organizations (1 member)
- Osugbo (39 members)
- Pages with broken file links (7 members)
- Pages with script errors (1 member)
- Painted Sands of Pteris (2 members)
- Pirates of Quelmar (2 members)
- Planes (24 members)
- Player Characters (460 members)
- Pteris (76 members)
- Pteris Cities (26 members)
- Qandela Obscura (17 members)
- Queljammer (6 members)
- Quelmar Goes To Space (8 members)
- Race (1 member)
- Races (42 members)
- Realmtrotter's Guide (19 members)
- Rule Benders (1 member)
- SUPERZ (16 members)
- Scribunto modules with errors (4 members)
- Secondary Characters (19 members)
- Ships (1 member)
- Sick of this Shit (64 members)
- SotS Inc (51 members)
- System Agnostic (30 members)
- Tails of Quelmar (3 members)
- Tales of Quelmar (7 members)
- Teatime Adventures (1 member)
- Tempest Brothers Expeditionary Company (13 members)
- Tempests Brothers Expeditionary Company (1 member)
- Template documentation (23 members)
- Templates (19 members)
- The BackHalls (47 members)
- The Court of Bloom and Blade (7 members)
- The Neighbours (19 members)
- The Underdungeon (42 members)
- Townson Tabletop (1 member)
- Towson Tabletop (236 members)
- Troubles in Alanya (1 member)
- Underdark (18 members)
- Utility templates (1 member)
- Variant Mechanics (1 member)
- Videos (15 members)
- Villains (25 members)
- WW NPCs (1 member)
- Weapon (3 members)
- Wicked Wilds (200 members)
- Wicked Wildss (1 member)