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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 haven't seen rust-vmm before, https://github.com/rust-vmm/community
Of course, as a user, I would prefer as much as possible to be under MIT or Apache. See for instance https://plane.dev/ for a similar project which is MIT licensed and https://jamsocket.com/ for the commercial version.
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.