Здесь OpenSource CRM системы.
Проверенные
- Feng Office - http://www.fengoffice.com/web/opensource/
- Sugar CRM - http://www.sugarforge.org/content/open-source/
- CiviCRM - https://civicrm.org/
Не проверенные
- openCRX - http://www.opencrx.org/
- Zurmo - http://zurmo.org/
- OroCRM - http://www.orocrm.com/