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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.
FreeBSD, NetBSD, and OpenBSD all have a ksh(1) descending from pdksh, while DragonFlyBSD does not implement any ksh.
Another interesting list is https://github.com/jpdasma/unix-cheat-sheet, although it doesn't seem to be entirely correct (it says OpenBSD has mount_nullfs, but I can't find anything similar in 7.1).
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.