-
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 Github repo hasn't had a new release since 2019, with just one guy being the primary maintainer
C) Extension and polyfill repositories. For examples, there's this article and the official docs.
There is a tests repository.
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.