Thingspeak is best IOT platform.Thingspeak support Arduino, Raspberrypi and many other types of development board.Thingspeak provide rest apis for send data to the Thingspeak cloud platform.we can visualize real time data with matlab.The best thing is that It provide feature for export data in json,xml and csv format.There is many guide tutorials by Thingspeak that is help us for get started with Thingspeak. Review collected by and hosted on G2.com.
Thingspeak not provide MQTT protocol supported apis.Thingspeak rest apis are not more secure. Review collected by and hosted on G2.com.