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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.
It does look like there are many "forks" of this software: https://github.com/SV8ARJ/spektrum/network/members . I did not look through all of them, but the ones I did look at only mention "RTL-SDR" in their readme's.
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.