Do self hosted virtual desktop software exist? If not. Why not?
I've always searched and failed to find a solution which would allow me to have my powerhouse desktop run my dev environment, perhaps in one room in my house, then from another room connect to it and control and launch and run devices as if it was native.
Does any such toppings like this exist. It's kind of like steam link but for a multi monitor desktop.
Remote desktop, vnc, NX (no machine). Or buy a super cheap windows server copy and RDP licenses on Ebay and use RemoteApp. Technically, remoteapp works on Windows 10 with hack and is exactly what you are asking for, if I understand you.
Yes, VNC. Multiple variants available. Remote devices might be available with some of them, otherwise there are other options for that like usbip.
like MSTSC for windows or XRDP for linux?