RedHen, a native Drupal 7 CRM
RedHen CRM (http://drupal.org/project/redhen) is an open source CRM framework built natively in Drupal. RedHen CRM is packed with association management (AMS) features for managing detailed information on contacts and organizations, membership services, event registrations, and constituent engagement.
The team behind RedHen, ThinkShout Inc., is interested in diving into the RedHen code base with anyone's who is interested in this effort. Come and join us - learn about what we're doing and roll up your sleeves to get involved.