I am thinking http://mosquitto.org/ might be a good choice.
I want to have a good IoT messaging broker to use with Apache NiFi.
Which ones have been tested or worked well?
When developing the MQTT processors I used Mosquitto to test. I found it to be a very easy to use and simple to configure broker that handled a decently high throughput even on my laptop.
That said, the NiFi MQTT processors should be able to communicate with any broker that handles the vanilla MQTT Api.
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