These videos, by Mark Harris, demonstrate using the free EigenD as a ‘super-flexible’ VST host.
While EigenD was originally developed for using with the Eigenlabs Eigenharp, it’s grown into a free, open source performance platform, for all digital music instruments and controllers.
Harriss’s videos demonstrate how it can work with any MIDI controller, and in particular with interfacing with Reason 7.
The first video, above, takes a look at MIDI input, Audio, Audio Unit, CC routing & Stage. The second video, below, looks at alternative routing, VSTs as FX & MIDI clock sync
For an introduction to EigenD, see Geert Bevin’s video, below: