The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
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- Affliation (2 members)
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- Alisian (9 members)
- All orphaned articles (0 members)
- Almsaundean languages (2 members)
- Alphabet (2 members)
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- Ancient Dialects (1 member)
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- Anyēa (3 members)
- April Romlang challenge (12 members)
- Archive (3 members)
- Articles with ambiguous glossing abbreviations (4 members)
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- Artlangs (50 members)
- Arts-Forum (1 member)
- Asermian Languages (6 members)
- Ashouctian (3 members)
- Asian (6 members)
- Atra (6 members)
- Attran Family (3 members)
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- Audio templates (1 member)
- August Challenge (17 members)
- August Germlang Challenge (5 members)
- Austronesian conlangs (5 members)
- Auxlangs (34 members)
- Avb'el (4 members)
- Ayslingian languages (12 members)