Open Society Buddies

International
the World Bank, the World Health Organization (WHO), UNAIDS, UNICEF, UNESCO/International Institute for Education Planning, the Organization for Security and Co-operation in Europe (OSCE), the United Nations Development Program (UNDP), the European Union, the Council of Europe, the Global Fund to Fight AIDS, Tuberculosis and Malaria, the European Commission, African Commission on Human and Peoples’ Rights, and the Asian Development Bank

National
United States Agency for International Development (USAID), the United States Department of State’s Bureau of Educational and Cultural Affairs, the United States Centers for Disease Control and Prevention

This and more can be found at:  https://www.opensocietyfoundations.org/sites/default/files/partners_20090720_0.pdf