Mathematica: ISSUE with all Entity operations on MMAv13.0.0.0 vs macOS Monterey 12.3 or 12.4 ["solved" by upgrade to MMA 13.1.0.0]
Wolfram SystemModeler: On Mac the Unit Conversions dialog is under SystemModeler -> Preferences -> Global -> Unit Conversion (rather than under Tools -> Options)
As of 2021-01-11 OpenModelica no longer has DMG install bundles for Mac, and currently does NOT install on Mac Big Sur using MacPorts!
