Did you know you can easily run multiple sandboxed instances of Pure Data on Mac?
Linux can probably do this with everything, but on Mac you often have to do weird workarounds like multiple release-versions.
With PD you can simply duplicate the app itself, maybe name it something and run both (or more) at the same time.
They seem to be independent, so if your crazy experimental patch crashes instance 2, your controller patch in instance 1 is still running. Pretty cool!