The Aspen Institute
The Aspen Institute is an international nonprofit educational institution dedicated to enhancing the quality of leadership through informed dialogue.
The Aspen Institute Nonprofit Sector Research Fund seeks to expand knowledge of nonprofit activities, impacts, and values, and promotes the use of new knowledge to improve nonprofit practices and inform public policy.

Institute for EastWest Studies (IEWS)
The IEWS is a transnational independent public policy think and action network acknowledged for its effectiveness in anticipating threats to security, economic prosperity and civil society, and developing leadership and institutions to meet those threats. The IEWS presses beyond problem identification and analysis to mobilize resources for problem resolution. Its value-based network of more than 4,000 professionals in 50 countries has played a cutting-edge role in the transitional process in Eurasia and Central Europe precipitated by the collapse of communism and the emergence of powerful new global forces.

The International Center for Not-for-Profit Law
The International Center for Not-for-Profit Law (ICNL) is an international organization whose mission is to facilitate and support the development of civil society on a global basis by assisting the creation and improvement of laws and regulatory systems that permit, encourage, and regulate the not-for-profit sector in countries around the world.

Indiana University Center on Philanthropy
The Indiana University Center on Philanthropy seeks to increase the understanding of philanthropy and improve its practice through research, teaching, and public service. The website provides detailed information about the Center's academic programmes, research, Fundraising School and publications.

The Johns Hopkins Comparative Nonprofit Center