Free CiviCRM Payment Module

CiviCRM is a web-based, internationalized suite of computer software for constituency relationship management, that falls under the broad rubric of customer relationship management. It is specifically designed for the needs of non-profit, non-governmental, and advocacy groups, and serves as an association management system. CiviCRM is designed to manage information about an organization's donors, members, event registrants, subscribers, grant application seekers and funders, and case contacts. Volunteers, activists, voters as well as more general sorts of business contacts such as employees, clients, or vendors can be managed using CiviCRM.