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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.
With respect to privacy, if you're looking into independently running a Bitcoin node, you can do this via Ledger Live & SatStack, which ultimately lets you connect an instance of Ledger Live that you're using, to your own personal Bitcoin node, without having to rely on Ledger (here is a link to the GitHub repo for this).
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.