The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 5th wheel camper trailers (2 members)
- @peterholcombe (0 members)
- A-frame camper trailers (2 members)
- AI images (118 members)
- Accessibility (1 member)
- Acronyms (29 members)
- Ads (3 members)
- Afghanistan (1 member)
- Air Conditioning (1 member)
- Air compressors (2 members)
- Air conditioners (1 member)
- Air conditioning (6 members)
- Airstream (1 member)
- Alabama (1 member)
- Alaska (7 members)
- Albania (1 member)
- Algeria (1 member)
- Alternator charging (2 members)
- Amazon (1 member)
- Ambulances (9 members)
- American Samoa (1 member)
- Andorra (1 member)
- Android Apps (22 members)
- Angola (1 member)
- Anguilla (1 member)
- Antarctica (1 member)
- Antigua and Barbuda (1 member)
- Apple Apps (26 members)
- Appliances (22 members)
- Apps (4 members)
- April 2024 (1 member)
- Argentina (2 members)
- Arizona (8 members)
- Arkansas (1 member)
- Armenia (1 member)
- Aruba (1 member)
- Astro (1 member)
- August 2024 (1 member)
- Australia (11 members)
- Austria (1 member)
- Auxiliary power outlets (1 member)
- Awnings (25 members)
- Azerbaijan (1 member)
- B-Series (1 member)
- Bahamas (1 member)
- Bahrain (1 member)
- Baja California (4 members)
- Bangladesh (1 member)
- Barbados (1 member)
- Basement (9 members)