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Dataset Search enables users to find datasets stored across thousands of repositories on the Web, making these datasets universally accessible and useful.
This site provides data on GovLoop, "an online community connecting over 200,000 government innovators from federal, state, and local government."
A community of data scientists; links to datasets included.
Pew Research Center Datasets
Datasets for the various categories studied by the Pew Research Center, including U.S. politics, media and news, social trends, religion and internet and technology.
Population Reference Bureau - Data
"Search hundreds of indicators, thousands of locations, and easily create custom reports to print, download, and share."
A very long list of data sets covering a wide variety of topics.
A searchable catalog of data repositories.
Recommender Systems Datasets
A collection of recommender systems datasets that have been used for research in Julian McAuley's (UCSD) lab.
"Hundreds of data sets from dozens of federal and state sources, along with some commercial or private source[s]."
U.S. government data, e.g. quarterly House of Representatives disbursements; campaign contributions by members of sports teams.
Features combined sources of data from various UN bodies. This is the first place to go for all UN data. Includes data from UNESCO, ILO, FAO, WHO, ITU, UNHCR, Human Development Report, Demographic Statistics, World Population Prospects, and Commodity Trade Statistics.
This site provides information about the World Bank and its services. Links to information about countries in Africa, East Asia and the Pacific, Europe and Central Asia, Latin America and the Caribbean, Middle East as North Africa, and South Asia.
"The Yelp dataset is a subset of our businesses, reviews, and user data for use in personal, educational, and academic purposes."