[jwells89]

As far as I’m aware, Windows doesn’t have anything quite like services on macOS and probably can’t because Windows apps, even those that are first-party, are built with a menagerie of different UI toolkits which means there are no universal hooks for something like services to use.

The reason macOS can do this is because a large majority of apps are either native AppKit or otherwise hook into the system text facilities (which is why text services work in text fields in Chrome and Firefox for example).