One half of Datasmith is the Importers, the other half is the Exporters (but the Exporters are only required on a few select Applications, since Datasmith can natively import a bunch of standard filetypes).
On Mac, the Datasmith Importer is supported right now. You might just need to go into Edit > Plugins and enable it. It can import many of those native file types.
For the Exporters, most of the applications don’t even exist for Mac, so we can’t create Exporters for them. The exception is Sketchup. We don’t have an Exporter for Sketchup on Mac yet, but this is a future goal.