International governmental organizations (IGOs) are organizations made up of more than one national government. The governments are the members.
Examples: United Nations, Organization of American States, North Atlantic Treaty Organization, World Health Organization.
Northwestern University Library's List of IGOs
The IGO Custom Search Engine searches across hundreds of IGO websites, enabling users to research topics such as active IGOs working on HIV/AIDS in Uganda, or treaties on human trafficking.
This Google Custom Search Engine (CSE) is a project of the International Documents Taskforce (IDTF) of the American Library Association (ALA). For more background on this project, including a growing list of IGOs included in the search, please see the IDTF wiki.
Non-governmental organizations (NGOs) are made up of groups or individuals from more than one country, but national governments are not members of these organizations.
Examples: Red Cross & Red Crescent Societies, Doctors Without Borders, Amnesty International.
Duke University Libraries Non-Governmental Organizations (NGO) Guide
The NGO Custom Search Engine searches across hundreds of Non-Governmental Organizations (NGOs) websites.
Sites 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).
More background on the IGO/NGO search projects can be found at the IDTF wiki, including a growing spreadsheet of NGOs included in this search.
These hints won't apply to every IGO web site, but will apply to many.
Make use of a web site's Search This Site feature!
About sections usually have information on
News sections often have links to transcripts of speeches by the IGO's leadersPublications and documents: IGOs use many different words for types of publications: documents, journals, papers (working or policy), publications, reports, research. In general (but not always)