ICPSR of the University of Michigan
ICPSR offers more than 500,000 digital fifiles containing social science research data. Disciplines represented include political science, sociology, demography, economics, history, gerontology, criminal justice, public health, foreign policy, terrorism, health and medical care, early education, education, racial and ethnic minorities, psychology, law, substance abuse and mental health, and more.
UK Data Center of the University of Essex
The UK’s largest collection of digital research data in the social sciences and humanities.
Berkeley’s UC DATA Archive
UC DATA’s data holdings are primarily in the areas of Political, Social and Health Sciences.
The Economic and Social Data Service (ESDS)
The Economic and Social Data Service (ESDS) is a national data service providing access and support for an extensive range of key economic and social data, both quantitative and qualitative, spanning many disciplines and themes. It contains a map of additional datasets from several European countries.
Wide data collections including sociological surveys, election studies, longitudinal studies, opinion polls, and census data. Among the materials are international and European data such as the European Social Survey, the Eurobarometers, and the International Social Survey Programme.
Gapminder is a popular technology and Web application for cross-visualisation of trends in time series of data. It also opens an archive of multiple datasets on diverse socio-economic indicators.
World Value Survey
The World Value Survey provides data about values and cultural changes in societies all over the world.
(source: Technology Review, lien)