The demo server crashed during my holidays due to a thunderstorm. Now it is up and running again with all interfaces active (MQTT and tcp/ip).
There is full information about the demo interfaces here
You can connect to the tcp/ip interface with VSCP Works+ by adding a new tcp/ip connection like
or to the MQTT interface with
At your choice, you can use the TLS/SSL interface (see)
Play with the VSCP MQTT interface using the built in MQTT input node or install node-red-contrib-vscp and node-red-contrib-vscp-tcp and connect to the tcp/ip interface.