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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.
This isn't exactly a rebuttal, but see this issue for how the changing ID could actually make it easier for websites that you visit more than once to track you.
Microsoft is part of the committee floc is made for https://github.com/w3c/web-advertising
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.