Ask HN: Using Vim like navigation on the windows/Mac applications?

Hi,

The navigation of vim is amazing. It's super fast and saves you from shoulder pain, but the problem is when you have to leave the vim interface and you need to interact with the notepad, or other windows/mac applications. You have to go back to using mouse.

Is there a way to navigate around everywhere similar to vimum browser extension? Is it possible to convert any input area follow vim convention like navigating, inserting, copying? Is it possible to implement it using the accessibilty api? Has anyone explored doing it?

I am open to try building something like this.