Drupal

Probably the most powerful, but still publicly available CMS solution available on the market.

Because of it's numerous functions it's relatively complex for first time use, thus not that suitable for smaller Websites.

On the other hand, Drupal offers wide capabilities in terms of limiting user access, simple Web form / poll / questionnaire creation, as well as integration with external applications.

WEBCentric has a major US client, a company from health insurance industry, for whom we maintain several business critical Drupal Websites, with many non-standard functionalities developed.

Unfortunately, due to contractual limitations we're not able to disclose any further details on this customer nor project.