Windows on the Microsoft Xbox

In a Nutshell, Windows on the Microsoft Xbox...

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  has had 3 commits made by 2 contributors
  representing 16,331 lines of code
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  is mostly written in C
  with a well-commented source code
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  has a codebase with a very short history
  maintained by nobody
  with stable Y-O-Y commits
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  took an estimated 4 years of effort (COCOMO model)
  starting with its first commit in January, 2004
  ending with its most recent commit over 21 years ago