Originally constructed by Robert Summers and Alan Heston of the University of Pennsylvania, together with the late Irving Kravis, the Penn World Tables are the definitive source for real national accounts data. The national accounts for each country, initially in their own currencies, are adjusted using detailed price data to obtain real national accounts in a common currency (U.S. dollars) across countries. These data are invaluable for making comparisons of Gross Domestic Product across countries, and for all manner of research on development and growth.
The International Agency for Research on Cancer (IARC) is the specialized cancer agency of the World Health Organization.
The objective of the CRS Aid Activity database is to provide a set of readily available basic data that enables analysis on where aid goes, what purposes it serves and what policies it aims to implement, on a comparable basis for all DAC members. Data are collected on individual projects and programmes. Focus is on financial data but some descriptive information is also made available.
D-PLACE is an interactive database which contains cultural, linguistic, environmental and geographic information for over 1400 human cultural groups. All cultural descriptions are tagged with the date to which they refer, a geographic location (using a reported latitude and longitude) and language. This allows users to simultaneously consider how cultural practices relate to linguistic ancestry, practices of neighbouring groups, and the environment.
The ACE website is an online knowledge repository that provides comprehensive information and customised advice on electoral processes.
The Cross-National Time-Series Data Archive was a product of the State University of New York (Binghamton), launched in the fall of 1968 by Arthur S. Banks under the aegis of the University's Center for Comparative Political Research (subsequently the Center for Social Analysis).