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renode
Renode - Antmicro's open source simulation and virtual development framework for complex embedded systems
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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.
qemu is fine if the IoT device only runs Linux; may want to look into something like https://renode.io/ for a more comprehensive approach.
NOTE:
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