: Simulates single and multi-touch gestures using a mouse.
In common parlance, when people search for a "Windows 8.1 Simulator," they often mean one of two things: a (true simulator) or a free VM environment (like a ready-to-run Windows 8.1 image). Windows 8.1 Simulator
Some tests show Windows 8.1 can be faster than newer versions on older hardware, making it a point of interest for performance enthusiasts. How to speed up a Windows 8.1 computer - Microsoft Learn : Simulates single and multi-touch gestures using a mouse