kriskowal's tusk

In a Nutshell, kriskowal's tusk...

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  has had 1,612 commits made by 37 contributors
  representing 5,379 lines of code
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  is mostly written in JavaScript
  with a very well-commented source code
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  has a young, but established codebase
  maintained by nobody
  with stable Y-O-Y commits
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  took an estimated 2 years of effort (COCOMO model)
  starting with its first commit in January, 2009
  ending with its most recent commit over 15 years ago