This document provides an overview of CiviCRM, an open source constituent relationship management (CRM) software for non-profits. It discusses why non-profits need a CRM to track interactions with constituents, what CiviCRM is and its key features. These features include tracking donors, members, events and more in one place, integrating with websites, customization options, and that it is free, open source software with a large global user community. The document also outlines what organizations need to use CiviCRM and next steps to learn more.