I'm starting doing some test of the JANDS VISTA .

In my opinion it's interesting software.

It work with out dongle and it use artnet protocol using PC/MAC native hardware.

IN your case you can download Jands Vista and Catalyst and make it work without any dongle. Since booth application are running in DEMO you will have the blu bars on catalyst and a 5 second blackout of the artnet output every x minute ( I don't remember ) on the vista software.