Try out the latest alpha releases of Drupal 8 on OpenShift. (Drupal is under active development, so any Drupal 8 sites should not be considered production-ready.)
Drupal is an open source content management platform written in PHP powering millions of websites and applications. It is built, used, and supported by an active and diverse community of people around the world. Administrator user name and password are written to $OPENSHIFT_DATA_DIR/CREDENTIALS.