I suggest keeping the GlassWire name for the software on any platform but signify the different platform products by appending a second name.
For the Mac, I suggest adding Gillie or Ghilly which is a specific type of attendant in Scotland. This fits the Scottish origin of the word Macintosh. As an aside, most of us think the Apple Macintosh was related to Mr Mackintosh's raincoat but it was named after an apple variety (get the link?) developed by a Scottish-Canadian (born in New York), John McIntosh. Apple changed the name by adding the A to avoid conflict with an organization with that name.
Gillie/Ghilly/Gilly is an excellent fit for your product because it describes four attributes of GlassWire:
- assist landowner
- prevent poaching
- control predators, and
- monitor property (land, flora and fauna) health
a gamekeeper employed by a landowner to prevent poaching on his lands, control unwelcome natural predators such as fox or otter and monitor the health of the wildlife.
That name would be my personal preference for a cross-platform product range except for one thing, it has no obvious link to network monitoring. So retaining GlassWire is worthwhile for that reason alone.
Continuing with the same theme you could differentiate other platform products in the same way by using other words for similar roles. They're usually prefixed with Game e.g. Game Warden:
GlassWire Warden, e.g. for Windows