Sandboxing apps in Mac OS

I use Sandboxie to sandbox apps in Windows. Is there a similar program to sandbox apps in Mac OS?

Everything from the mac app store is sandboxed by default.
Downloaded 3rd party apps can also be sandboxed if the dev added it.
Not aware of anything like Sandboxie on macOS, though.

Is there a way to tell if a 3rd party app is sandboxed in Mac OS?

Yes, in the Activity Monitor cpu plane. Add the “sandboxed” column to the selectors.

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