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Norm.net
Norm.net is an innovative and high-performance Database Access for .NET Standard 2.1 and higher
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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 looks like it even performs better: https://github.com/vb-consulting/Norm.net/blob/master/PERFOMANCE-TESTS.md
NOTE:
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Hence, a higher number means a more popular project.