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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 vast majority of open-source projects are just a handful of people, this even applies to something like OpenSSL - just look at it's contributors page on GitHub.
I'm contributing to one of the projects which writes such profiles, you could take a look. It might be rough initially, but after some time it becomes transparent.
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.