Contract-Exchange-Extension

In a Nutshell, Contract-Exchange-Extension...

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  has had 183 commits made by 4 contributors
  representing 13,940 lines of code
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  is mostly written in JavaScript
  with an average number of source code comments
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  has a well established, mature codebase
  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 December, 2009
  ending with its most recent commit over 7 years ago