Bundle copy Apr 17th, 2014 (updated Feb 2nd, 2016) Bundle Copy is in Drupal 8 Core CMI. It is a replacement for the Content copy module which lives in the CCK project for Drupal 6. Read more about Bundle copy
GeSHi Filter for syntax highlighting Feb 24th, 2013 (updated Apr 13th, 2014) This is the module that is used on this site for code highlighting. Read more about GeSHi Filter for syntax highlighting