For projects based outside of the United States, sources of funding include government and intergovernmental agencies.
Below is a partial list of development aid agencies (bi- and multilateral) and intergovernmental organizations. Additionally, you will also find links to resources for the European Union and the United Kingdom.
For a more complete list of bilaterals and information on intergovernmental organizations, you may find these Wikipedia entries helpful:
https://en.wikipedia.org/wiki/List_of_development_aid_agencies
https://en.wikipedia.org/wiki/Intergovernmental_organization
Bilaterals: Governmental Donors & Resources
Israel's Agency for International Development Cooperation (MASHAV)
New Zealand Aid Program, New Zealand Ministry of Foreign Affairs and Trade
U.K. Foreign, Commonwealth & Development Office (FCDO) (formerly the Department for International Development or DFID)
Non-governmental resources supporting U.K.-based organizations include Bond, a network for organizations working in international development, and Charity Excellence Framework (CEF), which offers a free funder database. Both Bond and CEF are primarily directed toward U.K.-based charities, although some resources are applicable to nonprofits globally.
Multilateral Agencies and Programs
EU Aid Explorer (shows where the E.U. and Member States provide external development assistance)
EU Book Shop (books and pamphlets on E.U. funding mechanisms, including grants, contracts, and scholarships)
E.U. Commission (makes direct financial contributions in the form of grants in support of projects or organizations to further the interests of the E.U. or contribute to the implementation of an E.U. program or policy)