The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- !t3ms++ (1 member)
- "To the Bat Poles!" (7 members)
- "To the Bat Poles!" images (2 members)
- "i" Is For Inventory (6 members)
- $3 (1 member)
- 'Dustrial Decor (1 member)
- /dank/null (7 members)
- 3D-Furnace images (2 members)
- 4-Space (39 members)
- 4-Space/cs (1 member)
- 4-Space/de (20 members)
- 4-Space/en (21 members)
- 4-Space/fr (20 members)
- 4-Space/pl (1 member)
- 4-Space/ru (10 members)
- 4-Space/tl (1 member)
- 4-Space/uk (21 members)
- 801-Core (4 members)
- 801-Core/en (1 member)
- 801-Core/uk (1 member)
- AE2 Power (21 members)
- AE2 Power/de (5 members)
- AE2 Power/en (5 members)
- AE2 Power/fr (1 member)
- AE2 Power/nl (1 member)
- AE2 Power/ru (4 members)
- AE2 Power/uk (4 members)
- AE2 Stuff (13 members)
- AE2 Stuff/de (7 members)
- AE2 Stuff/en (7 members)
- AE2 Stuff/fr (2 members)
- AE2 Stuff/nl (1 member)
- AE2 Stuff/ru (4 members)
- AE2 Stuff/uk (7 members)
- AE2 Tech Addon (15 members)
- AE2 Tech Addon/de (1 member)
- AE2 Tech Addon/en (1 member)
- AE2 Tech Addon/es (1 member)
- AE2 Tech Addon/fr (1 member)
- AE2 Tech Addon/ru (1 member)
- AE2 Tech Addon/sv (1 member)
- AE2 Tech Addon/uk (1 member)
- AE Power (10 members)
- AE Power/de (1 member)
- AE Power/en (1 member)
- AE Power/ko (1 member)
- AE Power/pl (1 member)
- AE Power/ru (1 member)
- AE Power/uk (1 member)
- AFSU (16 members)