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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.
If you have an older (ARM32 based) Lumia, there appears to be another project that can supposedly get an old insider Windows 10 build on there (depending on what phone you have): https://github.com/RedGreenBlue09/WFAv7_Installer
NOTE:
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Hence, a higher number means a more popular project.