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virtuinoCM
Recommended for communication with Virtuino app. This library supports any board (UNO, MINI, MEGA, DUE, ESP8266, ESP32, STM32 etc.)
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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.
Otherwise you could use Virtuino and the associated Android app (I would have previously recommended Blynk, but they are no longer as DIY-friendly as they were - and unlike Blynk, Virtuino communicates direct-to-device with no server needed).
I used this async web server example to go on and build myself a customized page to control my lamp
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.