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Selene
Automation tool based on MQTT data. Optionnal backends to create "DRM/Cairo" "DirectFB" or "Curses" graphical applications. (by destroyedlolo)
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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.
I built a framework allowing even based automation, dashboard creation and many other things. It is written in C (and some companion in C++) and is lacking of decent documentation but in source code's comment.
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