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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.
The closest modern variant is probably https://zynthian.org/ which embraces some of those restrictions - only a list of supported plugins, starting out with affordable hardware and being 100% transparent about it being a Raspberry Pi of sorts.
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.