From the developer documentation, "Sign In with Apple works natively on iOS, macOS, tvOS, and watchOS. And it works in any browser, which means you can deploy i

From the developer documentation, "Sign In with Apple works natively on iOS, macOS, tvOS, and watchOS. And it works in any browser, which means you can deploy it on your website and in versions of your apps running on other platforms" The "works in any browser" and "apps running on other platforms" parts seem to suggest it will work fine on Linux or Windows machines or even Android devices.