Open Data is a term used to describe data made openly available without restrictions or payment barriers — open access for data.
Data.Gov
The home of the US Government’s open data: data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more.
European Union Open Data Portal
Discover, browse European Union datasets. Visualization tools included.
Open Data Network
Explore, discover and contribute open data sets. Visualization tools included.
Healthdata.gov
125 years of US healthcare data including claim-level Medicare data, epidemiology and population statistics.
PubChem
PubChem is a freely accessible database that provides information about small molecules. It brings together chemical information with biomedical research and clinical information from numerous public sources. It is a key component of NIH’s “Roadmap”, which is intended to accelerate medical discovery to improve health.
Google Public Data Explorer
Includes data from world development indicators, OECD, and human development indicators, mostly related to economics data and the world.
Data.gov.uk
Data from the UK Government, including the British National Bibliography – metadata on all UK books and publications since 1950.
Canada Open Data
Government datasets and visualization tools.
Gapminder
Compilation of data from sources including the World Health Organization and World Bank covering economic, medical and social statistics from around the world.
ChemSpider
ChemSpider is a chemistry search engine, which was “built with the intention of aggregating and indexing chemical structures and their associated information into a single searchable repository … available to everybody, at no charge.” Nature is now depositing chemical data in ChemSpider.
Pew Research Center Datasets
Raw datasets from research into American societal trends.
some content MIT Libraries / CC BY 2.0
