I can really recommend modul8 as a VJ app. It might be a little taxing on the computer to run mainstage and modul8 at the same time (since both can be cpu and graphics intensive) @Rounic: is it possible to rewire modul8 into logic/mainstage?

Hi mads, Modul8 does not have rewire support from all the information I have been able to find... However, Arkaos VJ software is rewire enabled! I suspect with a bit of trickery Ableton Live or Mainstage/Logic could send MIDI out using the IAC Bus and in theory this could be used to trigger video in Modul8... But, I'd have to investigate that much further! :) Rounik