Drupal is a a free and open source content management system (CMS) in PHP.  Drupal not only provides basic functionality of a CMS but also has the flexibility to add new fatures and flexiblity. Drupal repository have a good number of contributed modules for general purpose and covers a wide range in features.

Drupal meets the needs of different types of web sites from community to news portals, from corporate sites to educational institutions, from media sites to international sites. Here are some case studies that showcase some of the ways Drupal has been applied: [source]

• Community Portal Site
• News Publishing
• Aficionado Sites
• Intranet/Corporate Web Sites
• Resource Directories
• International Sites
• Education
• Art, Music, Multimedia
• Social networking sites
• Virtual worlds
• Conference and "camp" websites

We (jhoroTEK) choose Drupal as our prime CMS beacuse of it's features and ability to fine tune every little details of the website. Drupal is not only a CMS, it can also be described as a content management framework. Drupal's Theme Mechanism, Contributed Modules like Views, CCK, wysiwyg api combination provides the perfect tool for our client's solution. As most of the requirments from client can be achived using contributed modules; drupal gives us the head start in developement.