Does anyone know of a program for mac which allows you to type using Vim input? Of course it's probably too hard to make it compatible with all the different t

Does anyone know of a program for mac which allows you to type using Vim input? Of course it's probably too hard to make it compatible with all the different types of text boxes, so I'm envisioning a shortcut that you can press, which brings up a small editing window, where you can use vim commands, and then you can copy and paste into whatever text field you want.