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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.
OTOH the Z80 will run CP/M, or an open source CP/M clone (I made one! http://cowlark.com/cpmish), which will give you access to a huge variety of ancient software which will work out-of-the-box --- excellent if you want a Cobol compiler or to use WordStar. Also, CP/M is pretty easy to port due to its modular design.
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