Hi David,
Correct, closest to Fences on Mac is the app "Desktop Groups" https://apps.apple.com/us/app/desktop-groups/id542912361?mt=12 which is quite old, but according to the App Store does still work.
There are also apps like Unclutter, which provide a dock like functionality, and others similar. https://unclutterapp.com/
Sparkle exists, but is more of an AI-powered auto-folder-maker that overall doesn't have much functionality, and in our use did not make good assumptions about how to auto-organize. If anything it was destructive, by ruining the "Date added to folder" metadata. So, we don't recommend it's use. Feel free to give it a try, but MacOS's built in Desktop Stacks functionality likely gives just as much boost.
We've considered bringing Fences to the Mac, but just haven't seen a market for it at this time. If these apps don't do it for you and you have thoughts to share, we're welcome to hear. Thanks again for the question
