...you might not get the standalone executable when bundled.
But sometimes you can create one yourself. If you have Rapture (including its microhost), then the following workaround method might work:
Create a folder somewhere away from any VST plug-ins folders.
Copy the Rapture.exe file into this folder.
Copy the z3ta+.dll file into the same folder.
Re-name the z3ta+.dll file to Rapture.dll.
Create a shortcut (in your start menu or desktop) to the Rapture.exe file (and rename it to "z3ta+ Standalone" or similar).
Running the shortcut launches z3ta+ as a standalone. Hopefully anyway! I have not tried this method for z3ta+, but it worked for DimPro (although it turned out that a DimPro standalone was available after all so I need not have bothered contriving one).