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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 doesn't need a VM, but needs an OS, its an old game server that has docker as an option to run it, I can run it off an OS, but I've used it as docker and prefer that better, if you're curious why, it's called rAthena on github(not sure if this is allowed, but heres a link to the project and docker instructions https://github.com/rathena/rathena/tree/master/tools/docker )
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.