What is the differences between Suitecrm and CiviCRM?
CiviCRM is made for non-profits. The C in CiviCRM points to your constituents. These are organisations and persons that share the mission of the non-profit. You can use CiviCRM to store the contact details, like address, telephone, and email, but it also has specific modules for specific non-profits processes like:


CiviContribute to register donations.
CiviMembership to register members.
CiviEvent to register participants for events.


I do not know SuiteCRM but mostly the C in CRM is short for customer, and the application supports the process of selling products and services

Your choice of the software depends on what you want to do.