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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.
Pi-Hole?
Adguard
That could also be done without centralized processing of it via some kind of peer-to-peer sync thing (like syncthing, which already exists).
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