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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'm not the most knowledgable on the topic, as most of what I have done was troubleshooting esptool with weird development boards. But the programmer tool is called esptool and can be found on github. https://github.com/espressif/esptool
NOTE:
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Hence, a higher number means a more popular project.