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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.
I believe you are looking for this.
In my case, they can actually know precisely which font I'm using down to the hash of the source files: https://github.com/Atemu/nixos-config/blob/9c7734a1a5c5114990c6aef4419f47be05a628ef/desktop.nix#L79
NOTE:
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Hence, a higher number means a more popular project.