Lazy Engineers free MQTT server is now live.
For now the broker and the client supports only the basic functions. Hopefully I will be adding more features in the future. If you feel like you can help in the project development please feel free to join this project on Hackaday or shoot me a message and we can discuss further.
The broker is hosted on Google Compute Engine and it uses the settings below.
Plain Websocket Port: 10452
Plain TCP Port: 1883
SSL TCP Port: 8883
SSL Websocket Port: 9883
When I have time I will add some information about installing and testing an MQTT broker on your own machine.