Open Source software is software in which the source code is released under a license in which the software developer grants users the rights to modify the software code.
CRM Software is business software that enables a company to store contacts, convert leads, manage sales pipeline and close deals.
Some of the most popular CRM Software’s are open source solutions. Open source CRM Software is often used as an alternative to proprietary CRM software like Salesforce.com
Read More – https://digitalcrm.com/top-15-open-source-crm-software/