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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Try https://www.tiingo.com/ pretty cheap data. You might be able to also scrape https://finviz.com/screener.ashx?v=161&ft=2&o=pe and store the data and compare. Useful python package I have previously used. https://github.com/mariostoev/finviz
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.