sign-in-with-twitter

In a Nutshell, sign-in-with-twitter...

• ...
  has had 10 commits made by 1 contributors
  representing 604 lines of code
• ...
  is mostly written in PHP
  with an average number of source code comments
• ...
  has a codebase with a very short history
  maintained by nobody
  with stable Y-O-Y commits
• ...
  took an estimated 1 years of effort (COCOMO model)
  starting with its first commit in May, 2009
  ending with its most recent commit about 16 years ago