Top 5 crm-system open source projects

DaybydayCRM an open-source CRM, to help you keep track of your daily workflow.

A CRM Software for church management.

Orchard Collaboration is a free, open source ticketing system, project management and collaboration framework build on top of the Orchard CMS. It natively integrates with Orchard CMS and extends its features by allowing its users to collaboratively work on the content or by simplifying communication with the customers.

Collect feedback in-game/in-app with STOMT for Unreal Engine.

Gee Control Panel，全面开源，符合中国市场习惯的企业级产品计费系统。