This paper presents the open source content management system (CMS) Drupal and examples that illustrates how Drupal may be used to build a Library 2.0 Website. Have you been in Helsinki? Then you surely noticed all those wonderful Web 2.0 tools that help librarians to communicate with their users and create community around their library. But all those tools – weblogs, wikis, forums, tagging, social networks – are located at different places and each requires a specific login and password. Would it be possible to have the same functionalities at one place? Some Open source content management systems could help in some way, and among them, Drupal.