Is there any software to project only a particular window or application

Question

I often need to display a specific window on a projector and to show another window on my laptop. It's do able by extending the desktop, but in practice, it is often hard to manage both, especially when we need to interact often with the second window displayed on the projector.

I had the chance to test an Airtame Device and their software have exactly such feature (https://help.airtame.com/en/articles/2092600-single-window-sharing-for-windows-macos), but the device is expensive, wireless and is made for other use cases.

Is there any software for Windows (or any other operating systems) using the same principle or do you have any tips to make the projection experience better?

Thanks in advance