hera's past and current clients include:

National and regional governments in over 100 countries across Africa, Asia, the Caribbean, Europe, Latin America, the Mediterranean, the Middle East and the Pacific.

International development agencies:

• African Development Bank (AfDB),
• Asian Development Bank (AsDB),
• Agence Française pour le Développement (AFD),
• Australian Government Overseas Aid Program (AusAid),
• Belgian Technical Cooperation (BTC),
• Danish International Development Assistance (DANIDA),
• Dutch International Cooperation Agency (DGIS),
• Belgian Directorate for Development Aid (DGOS),
• Directorate for Foreign Affairs, Trade and Development (DFATD), Global Affairs Canada
• Directorate for International Development (DFID),
• EuropeAid (EC),
• European Investment Bank (EIB),
• Flemish Agency for International Cooperation (VAIS),
• Global Fund (TGF),
• Inter-American Development Bank (IADB),
• International Fund for Agricultural Development (IFAD),
• International Financing Cooperation (IFC),
• Japanese International Cooperation Agency (JICA),
• Kreditanstalt für WiederAufbau (KfW),
• Lux Development (LuxDev),
• Norwegian Agency for Development Cooperation (NORAD),
• Swedish International Development Cooperation Agency (SIDA),
• Swiss Agency for Development Cooperation (SDC),
• United Nations Development Programme (UNDP),
• United Nations Population Fund (UNFPA),
• United Nations Children's Fund (UNICEF),
• United Nations Industrial Development Organisation (UNIDO)
• United Nations Organisation for Project Support (UNOPS),
• World Health Organization (WHO),
• World Bank (WB),
• World Food Programme (WFP)

Non-governmental agencies:

• Catholic Organisation for Relief and Development (CordAid, Netherlands),
• Comité Catholique contre la Faim et pour le Développement (CCFD, France),
• Centre de Recherche Opérationnelle en Santé Publique (CROSP, Belgium),
• Danish Red Cross (DRC, Denmark),
• Fondation contre les Affectations Respiratoires et pour l'Education à la Santé (FARES, Belgium),
• fos-socialistische solidariteit (fos, Belgium),
• International Centre for Reproductive Health (ICRH, Belgium),
• International Development research centre (IDRC, Canada),
• International Red Cross (IRC),
• International Union Against Tuberculosis and Lung Diseases (IUATLD),
• Memisa (Belgium),
• Misereor (Germany),
• Orchid Project (ORCHID, UK),
• Plan International,
• Rockefeller Foundation (USA),
• Save the Children (SC, UK),
• SolidarMed (Switzerland)
• South African Aids Trust (SAT, South Africa),
• World Diabetes Foundation (WDF, Denmark)

Private organisations: private hospitals, medical stores, British Broadcasting Company (BBC).