Show HN: Rapto – the missing window manager for macOS

The desktops bar is the part that caught my eye. I came across a similar problem when I was working on a Mac utility app of my own. Accessibility will only give the windows on the current desktop, so anything on another desktop or in full screen is just invisible to it. How does Rapto know what's open on the other desktops, and how are you guys trying to solve it?

Also, is the instant switch being done through private Windows server calls, or did you find something public?