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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.
Lucas Chess and Deep Shredder would be my recommendations. You can load and play all sorts of engines in Lucas Chess, so once you find the perfect engine out there for your Dad you can just set that as the default everytime.
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.