- European Commission - EuropeAid
- Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH (former GTZ)
- KfW Development Bank
- United States Agency for International Development (USAID)
- World Bank
- International Finance Corporation (IFC)
- Millenium Challenge Corporation (MCC)
- Chancellery of the Federal State North-Rhine-Westphalia
- CDG - Carl-Duisberg Gesellschaft
- State of Karnataka
- State of Madhya Pradesh
- Private companies