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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.
Or, if you use Python, there are several packages that let you apply the full power of the scientific Python ecosystem to flow data. Admittedly, I'm partial to the one I wrote: https://github.com/cytoflow/cytoflow. And if you want point-and-click, there's a GUI too. (No KS test, though it would be straightforward to add -- submit a feature request on Github!)
NOTE:
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Hence, a higher number means a more popular project.