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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 this C level is going to be stubborn about good password policy suggest a 6 word passphrase to him. They are easier to remember and type with around the same security as a full random large char set password. There are free web-based apps that do this, but if you're paranoid implement something like this github project in a local win app.
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.