-
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.
If I was doing this kind of thing from scratch I'd probably use an ESP32 (wifi/BT built in), or some other dev board if you need RJ45. I'd be tempted to hack a radio plug kit for safe messing with mains (no security though). I'm sure there are easier ways!
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.