Drupal is a free and open-source content management framework (CMF) written in PHP and distributed under the GNU General Public License. It is used as a back-end system for approximately 2.1% of all websites worldwide, ranging from personal blogs to corporate, political, and government sites including whitehouse.gov and data.gov.uk. It is also used for knowledge management and business collaboration.
President Obama fulfilled his promise to release the code behind "We the People", a Drupal-based application that enables the American people to directly petition the President of the United States on issues they care most about. In October of 2009, WhiteHouse.gov was relaunched on Drupal and two years later, the White House launched “We the People” also on Drupal, a big step forward for Open Government.
The release follows a commitment the President made to the United Nations to share the technology behind this platform “so any government in the world can enable its citizens to do the same". While governments haven't traditionally recognized the importance of the word of mouth organizing that thrives on the Internet, “We the People” encourages grassroots citizen engagement and making its code available to others is a great leap forward in establishing open communication between citizens and governments all around the world.