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esp-honeypot
Simple ESP8266 / ESP32 Canary that simulates predefined application server and notifies you using E-mail, Telegram, etc if it was accessed.
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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 think you are looking for this: https://github.com/esp8266/Arduino/blob/master/libraries/Netdump/examples/Netdump/Netdump.ino
NOTE:
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Hence, a higher number means a more popular project.