This search engine searches sites which were chosen based on their consultative status with the United Nations Economic and Social Council (ECOSOC) and also collated from University of Minnesota Human Rights Library, Duke University Libraries' NGO Research Guide, and the World Association of Non-Governmental Organizations (WANGO).
Non-governmental organizations (NGOs) have become increasingly influential in world affairs. They often impact the social, economic and political activities of communities and the country as a whole. NGOs address a host of issues, including, but not limited to, women’s rights, environmental protection, human rights, economic development, political rights, or health care. In numerous countries, NGOs have led the way in democratization, in battling diseases and illnesses, in promoting and enforcing human rights, and in increasing standards of living.
International governmental organizations (IGOs) (e.g. UN, EU, OAS, etc.) work closely with NGOs. Here are several listings of NGOs which are affiliated with specific IGOs:
The Greenpeace to Amchitka: an Environmental Odyssey by 
