Mouse without borders
Mouse Without Borders is a Microsoft Garage project by Truong Do. Garage projects are side projects that Microsoft employees like Truong build for fun on their nights and weekends. Mouse Without Borders was designed for people who use many computers in the same room. For example, a laptop or tablet that you take to meetings might sit right alongside the desktop PC in your office.
Have been using this for a little while now and it works perfectly, well worth a look if you are looking to control multiple devices and don’t want to use a clunky old KVM switch.