For a discussion of the goals, political tendencies, and influence levels of major think tanks, the Think Tanks and Civil Societies Program (TTCSP) at the University of Pennsylvania conducts research on the role policy institutes play in governments and civil societies around the world. To access its annual report on think tank trends and the role think tanks play as civil society actors in the policy making process, GO HERE.
Descriptions of resources are adapted or quoted from vendor websites.
Below are searchable directories of international, domestic, and local organizations.
Google Think Tank Search Engine -- customized Google search of 700 of the most important U.S. and international think tanks affiliated with universities, governments, advocacy groups, foundations, non-governmental organizations, and businesses that generate public policy research and analysis.
Gale Directory Library -- resource that allows you to search a variety of directories by name or keyword, including international and domestic research centers, broadcast media, associations, non-profit organizations, and government agencies.
World Association of Non-Governmental Organizations Directory -- an organization uniting NGOs worldwide in the cause of advancing peace and global well being. The directory includes hundreds of NGOs that are searchable by keyword or can be browsed by region.
The University of Pennsylvania Lauder Institute Think Tanks and Civil Societies Program conducts research on the role policy research institutes play in governments and civil societies around the world. Since 2008, the organization has developed and published an annual Global Go To Think Tank Index Report that uses an international survey of over 1,950 scholars, public and private donors, policy makers, and journalists to rank the world’s leading think tanks in all the major areas of public policy research and in every region of the world based on eighteen criteria.