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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.
Yes it is open source, here is the GitHub: https://github.com/abstracthat/dactyl-manuform
I think it might be this one: https://github.com/atsuyuki/dactyl-manuform-skeleton-edition-4x5
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