moodle-mod_groupselect

In a Nutshell, moodle-mod_groupselect...

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  has had 78 commits made by 12 contributors
  representing 777 lines of code
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  is mostly written in PHP
  with a well-commented source code
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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 1 years of effort (COCOMO model)
  starting with its first commit in April, 2008
  ending with its most recent commit almost 11 years ago