General Datasets
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Harvard DataverseContent: Miscellaneous
Access: Free, no registration -
Academic TorrentsContent: Miscellaneous
Access: Free, but you need a torrent client -
KaggleContent: Miscellaneous
Access: Free, registration required -
DryadContent: Miscellaneous
Access: Free, no registration -
GitHub - Awesome Public DatasetsContent: Miscellaneous
Access: Varied -
data.worldContent: Miscellaneous
Access: Varied -
Google - Dataset SearchContent: Miscellaneous
Access: Varied
Subject-Specific Datasets
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FiveThirtyEight - Our DataContent: Politics, sports, science & health, economics, and culture
Access: Free, no registration -
Microsoft - Researcher Tools: Code & DatasetsContent: Artificial intelligence, human language technologies, human-computer interaction, etc.
Access: Free, no registration -
UCI Machine Learning RepositoryContent: Machine learning
Access: Free, no registration -
CERN Open Data PortalContent: Particle physics
Access: Free, no registration -
NASA - Earth DataContent: Earth science
Access: Free, no registration -
World Bank Open DataContent: Global development per capital
Access: Free, no registration -
FBI - Crime Data ExplorerContent: Crime and law enforcement
Access: Free, no registration -
World Health Organization - Data CollectionsContent: Health
Access: Free, no registration
Datasets Provided by Cloud Providers
If you're a cloud subscriber of Amazon, Google, or Microsoft cloud services, you can access datasets on their platforms.
