That's a low barrier for what is meant by managing multiple windows. What I mean by "managing multiple windows" is a single OS-process and application managing

That's a low barrier for what is meant by managing multiple windows. What I mean by "managing multiple windows" is a single OS-process and application managing multiple windows: creating them, destroying them, hiding them, etc. Electron cannot do this. You are basically creating separate applications that talk to each other through inter-process communication. I mean, it says it right there in the link you posted. The process model of Electron is complex. Here's how you create multiple windows in my in-work prototype: let windowing = Windowing() windowing.Initialize() windowing.CreateWindow("Window 1") windowing.CreateWindow("Window 2") windowing.CreateWindow("Window 3") while(windowing.WindowsAreOpen) do System.Threading.Thread.Sleep(100)