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AidData aggregates information from multiple sources to provide a searchable database of global development assistance flows and projects.

Armed Conflict Database

Armed Conflict Database covers international and internal conflicts, as well as terrorism, including information on refugees and returnees, internally displaced persons, weapons used and their flows, fatalities, costs, historical backgrounds, and timelines. (Harvard University ID and PIN required.)

Cingranelli-Richards (CIRI) Human Rights Data Project

The CIRI Human Rights Data Project provides data on human rights violations for 195 countries, annually over the period 1981-2011.

Comparative Welfare States Dataset

The Comparative Welfare States Dataset covers 18 countries over the period 1960-2000. Information on wages, government revenue and spending, labor force and labor institutions, country demographics and macroeconomic and political variables are included.

Correlates of War Project

Provides many datasets on international relations topics, including international conflict, militarized international disputes, bilateral trade, and diplomatic exchanges.

Database of Political Institutions 2010

The Database of Political Institutions includes numerous measures of regime characteristics for many countries over the period 1975-2012. Examples of variables provided by the dataset include government tenure, stability, checks and balances, identification of parties with the government coalition or the opposition, and fragmentation of opposition and government parties in legislatures.

Environmental Treaties and Resource Indicators Service

This database offers multilateral environmental treaty data, including status data for treaties, treaty text and other related information.

Freedom House

Freedom House provides annual scores of civil and political rights for most countries.The Freedom in the World dataset covers the period 1972-present. The Freedom of the Press dataset offers scores of press freedom for the years 1980-present.

Homeland Security

Data and Statistics provided by the Department of Homeland Security, including a yearbook of immigration statistics, profiles on legal permanent residents, profiles of naturalized citizens, and immigration related maps.

Human Rights Data Analysis Group (HRDAG)

Published datasets by the Human Rights Data Analysis Group (HRDAG) on human rights violations in Colombia, GBuatemala, Sierra Leone, Kosovo, and Liberia.

Manifesto Project

The Manifesto Project database is based on content analyses of party election programs for free and fair elections in more than 50 countries since 1945. The dataset provides measures of the following issue domains: external relations, freedom and democracy, political system, economy, and welfare and quality of life.

Mexican Migration Project

The Mexican Migration Project offers survey data at the household level in Mexico and the United States since 1982.

Minorities at Risk (MAR) Project

The Minorities at Risk (MAR) Project provides information on the status and conflicts of more than 283 politically-active communal groups in all countries with a current population of at least 500,000.Characteristics of 118 ethnopolitical organizations of minority groups in the Middle East and North Africa (MAROB) are also provided.

National Agricultural Workers Survey

Administered by the United States Department of Labor, the National Agricultural Workers Survey (NAWS) is an employment-based, random survey of the demographic, employment, and health characteristics of the U.S. crop labor force. The information is obtained directly from farm workers through face-to-face interviews. Since 1988, when the survey began, over 53,000 workers have been interviewed.

OECD Migration Data

The Database on Immigrants in OECD Countries (DIOC) provides comprehensive and comparative information for the year 2000 on a broad range of demographic and labor market characteristics of immigrants living in OECD countries. The Database on Immigrants in OECD and non-OECD countries is an extension of the database. The International Migration Database includes information on migration flows, stock and other aggregate measures.

Peace Research Institute Oslo (PRIO)

The Peace Research Institute Oslo offers extensive amounts of information on civil conflicts and small arms transfers.

Polity IV Project

The Polity IV Project provides regime type data for most countries since 1800.

Quality of Government (QOG) Institute

The Quality of Government Institute (QOG) at the University of Gothenburg provides comprehensive datasets of cross-national political, economic and social information. See the dataset codebook for information.

Stockholm International Peace Research Institute (SIPRI)

The Stockholm International Peace Research Institute provides a series of datasets on international military expenditures, arms transfers, arms embargoes, multilateral peace operations, security trends and arms industries.

Transboundary Freshwater Dispute Database (TFDD)

A project of the Oregon State University, the Transboundary Freshwater Dispute Database offers six datasets including, among others, information on international freshwater treaties over the period 1820-2007and international water events over the period 1948-2008.

Transparency International’s Gateway Corruption Assessment Toolbox

Transparency International focuses on studying and stopping corruption around the world. It publishes many surveys and studies, including Corruption Perceptions Index, Global Corruption Barometer, Global Corruption Report, National Assessments, Anti-Corruption Helpdesk, Exporting Corruption, Bribe Payers Index, Research Network, Business Survey and Research by Country. Its Gateway Corruption Assessment Toolbox is a database of existing diagnostic tools, searchable by key criteria and updated at regular intervals, along with topic guides on how to use them. Topics include access to information, aggregate indices, corruption risk assessment, corruption surveys, education, health and water, justice sector, local governance, monitoring conventions, political corruption, private sector, public finance, public integrity, public procurement and social accountability.

United Nations General Assembly Voting Data

General Assembly roll-call data from 1946-2014 compiled by Erik Voeten and Adis Merdzanovic.

United Nations Statistics Division (UNSD) Environmental Indicators

UNSD Environmental Indicators disseminate global environment statistics on ten indicator themes (Air and Climate, Biodiversity, Energy and Minerals, Forests, Governance, Inland Water Resources, Land and Agriculture, Marine and Coastal Areas, Natural Disasters, and Waste) compiled from a wide range of data sources.

Uppsala Conflict Data Program (UCDP)

The Uppsala Conflict Data Program at the University of Uppsala has compiled a comprehensive set of data on international and intra-national conflict worldwide since 1946.