By databases

• Postgres
  • bacterial rRNA database
  • The Sakila example database
    • https://dev.mysql.com/doc/sakila/en/
  • https://github.com/devrimgunduz/pagila
• BigQuery
  • https://cloud.google.com/bigquery/public-data
• ClickHouse
  • https://clickhouse.com/docs/en/getting-started/example-datasets

By dataset

• National Ecological Observatory Network
  • https://data.neonscience.org/
• Kaggle
  • https://www.kaggle.com/datasets
• Hugging Face
  • https://huggingface.co/datasets
• data.world
  • https://data.world/
• GCP
  • https://cloud.google.com/datasets?hl=zh-tw
• AWS
  • https://aws.amazon.com/marketplace/search/results?trk=868d8747-614e-4d4d-9fb6-fd5ac02947a8&sc_channel=el&FULFILLMENT_OPTION_TYPE=DATA_EXCHANGE&CONTRACT_TYPE=OPEN_DATA_LICENSES&filters=FULFILLMENT_OPTION_TYPE%2CCONTRACT_TYPE
• Azure
  • https://learn.microsoft.com/zh-TW/azure/open-datasets/dataset-catalog
• GitHub
  • https://github.com/awesomedata/awesome-public-datasets
• Google Dataset Search Engine
  • https://datasetsearch.research.google.com/