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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.
You can run zoom, and skype for that matter, using firejail [1]. There can be glitches now and then, in my cases only with skype IIRC, but it's rare and usually quickly fixed (just update your local configuration from upstream).
[1] https://firejail.wordpress.com/
There is a sort of opensnitch based on ebpf but not sure is fully feature completed as you intended:
https://github.com/harporoeder/ebpfsnitch
NOTE:
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Hence, a higher number means a more popular project.