FQA INDEX | FQA 1 - Introduction To 9front html | pdf | troff 0.1 - What is Plan 9? Plan 9 is a research operating system from the same group who created UNIX at Bell Labs Computing Sciences Research Center (CSRC). It emerged in the late 1980s, and its early development coincided with continuing development of the later versions of Research UNIX. Plan 9 can be seen as an attempt to push some of the same ideas that informed UNIX even further into the era of networking and graphics. Rob Pike has d...