The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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 (65 members)
- SotS Inc (51 members)
- System Agnostic (32 members)
- Tails of Quelmar (3 members)
- Tales of Quelmar (8 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 (48 members)
- The Court of Bloom and Blade (10 members)
- The Iron Sea (1 member)
- 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)
- War (1 member)
- Weapon (3 members)
- Wicked Wilds (199 members)
- Wicked Wildss (1 member)
- Within the Wicked Wilds (5 members)