Cloud platforms

• Pybytes
• Thinger.io
• Ubidots (STEM edition). Seems to have good support for Pycom.
• Adafriut IO
• Cayenne MyDevices
• Blynk IoT Libraries for MicroPython exist.
• Thingsboard, can be run locally with Docker.
• Thingsspeak, Matlabs cloud
• Iottweet.com Not tested, seems to be free.
• https://freeboard.io/ Freeboard. Used to be free, not anymore …

Then we have the three big players…

• AWS IoT Things Graph
• Azure IoT
• Google Cloud IoT

Public MQTT Brokers

• MQTT brokers, if needed for testing. No need of starting one on your own computer.