Website: https://gimespace.com/kvmshare.html
Download: GiMeSpace_Keyboard__Mouse_Share_v1.1.0.exe
License Key: 9357348570124

Compared to similar other programs this program has much smoother and responsive mouse movements, much higher data transfer rates and does enable you to share windows on the screen of the other computers.
KVMShare Pro works now on all windows versions from XP till 11.