This article is within the scope of WikiProject Plan 9, a project which is currently considered to be inactive.Plan 9Wikipedia:WikiProject Plan 9Template:WikiProject Plan 9Plan 9 articles
This category seems to list articles based on association with a topic, not by being Plan 9. This makes it problematic to categorize it as a operating system.--Frysch (talk) 14:48, 26 November 2015 (UTC)[reply]