Here's both Standalone and VST of MuLab and RapidComposer.
The VST is the same as the Standalone for both Win and Mac and released at the same time. They don't use a bridge to work, both contain the same code.
The BBPlugin is the same deal except it's not released at the same time, Adar would have the Mac Plugin done but would be still waiting for the Mac backend to be made 6 months down the track. Once the code is internalized in the Plugin Look Out, Quantum speed development !

Zoom++