The improved effectiveness of philanthropic funders can have a profoundly positive impact on nonprofit organizations and the people and communities they serve. The Center for Effective Philanthropy (CEP) is a nonprofit organization focused on the development of comparative data to enable higher-performing funders. CEP’s mission is to provide data and create insight so philanthropic funders can better define, assess, and improve their effectiveness and impact. With Research, Publications, Assessment Tools, Conferences, Event Center, Media and Contacts.