CiviCRM is a Constituent Relationship Management System for Joomla! This component (primarly targeted to the non-profit and public sectors) will allow you to very effectively manage your organization's contacts, and begin to build a better connection between your CMS and your constituents.Development site: http://wiki.civicrm.org/. CiviCRM has multiple sub-module that are based on the CRM and extend the data model. They include: CiviContribute: A donation module to accept online payments via PayPal, Authorize.net, Google and Moneris. Recurring donations are also supported via PayPal and Authorize.net CiviEvent: An event management module for integrated event registration and management CiviMember: A membership module to manage your members CiviMail: A high performace broadcast email engine Note that CiviCRM now requires PHP v5.2 and MySQL v5.0 and higher. If you need help installing this component please consult the service provider list at http://civicrm.org/professional/ Note that the CiviCRM license is AGPL v3 which is compatible with GPL v3. CiviCRM v2.0 does NOT support Joomla 1.5 (in either mode), however some folks do have this working. CiviCRM v2.1 will only support Joomla v1.5 in native mode.