lagrange space url: https://lagrangedao.org/spaces/0x8F69a3455f7c961bE4C4544410c720De4A3b87eA/drupal/app
Drupal is a free and open-source content-management framework written in PHP and distributed under the GNU General Public License. It is used as a back-end framework for at least 2.1% of all Web sites 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.