Drupal is the best multi-purpose open source software written in PHP/MySQL CMS software used by high profile people, celebrities, non-profit institutions, schools, and Fortune 500 companies. Drupal is a fast, reliable, scalable, expandable and high performance content management platform. Drupal supports cross-platform software supporting all major operating systems not only on Apache/IIS/ Lighttpd/nginx but also on Unix, Linux, BSD, Solaris, Windows and Mac OS X platforms. Drupal is renowned for its seamless pluggable modules and themes. Drupal gained popularity and reputation for building social networking sites, company intranets, online classrooms, blogs, forums, image gallery, and many more.