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American Policy Directory
A large list of policy agencies and think tanks, from University of Oregon.
A list of think tanks categorized by political leaning, from the New York Times.
Think Tank Search
Harvard University's search tool can help you find think tanks doing research on your topic.
Think Tanks Guide
An annotated list of think tanks, from the University of Chicago Harris School of Public Policy.
Assessing Charity Effectiveness
Use the search box to look up your organization, then look at the numbers for Program Expenses and Administrative Expenses.
Evaluates how charities allocate donated funds.
Analyzes and ranks charities as to the best use of donated funds.
High Impact Giving Guide
The University of Pennsylvania's guide to charitable giving, organized by broad topical area.
Examines the factors that influence charitable giving, with the goal of helping people make wiser charitable giving decisions.
Human Rights Watch
Investigates and reports on abuses happening in all corners of the world.
An international development organization, that focuses on contributing to stronger and more equitable ecosystems, with global networks of partners in Africa, Latin America and Asia.