data.world Community
Social data catalog to share, query, and collaborate on open datasets.
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UCI Machine Learning Repository
Classic collection of ML datasets used in research and education.
OpenML
Open platform to share datasets, tasks, and benchmarks for machine learning.
Data.gov (US Open Data)
The U.S. government’s open data portal aggregating hundreds of thousands of datasets.
Registry of Open Data on AWS
Discover public datasets available via AWS resources with examples and tutorials.
Google Cloud Public Datasets
Curated, analysis-ready public datasets hosted on Google Cloud/BigQuery.
Hugging Face Datasets Hub
Huge catalog of ML-ready datasets with cards, viewers, and the 🤗 Datasets library.
Kaggle Datasets
Community-driven repository of datasets with notebooks, discussions, and trending signals.
Google Dataset Search
Meta-search across millions of datasets on the web with schema.org-powered indexing.