Vimium-like navigation in Windows and all other applications

The LabelControl AutoHotkey script can overlay buttons, controls, and other interface elements with a number. You can access the interface controls at any time by inputting the number that belongs to one of them.

E.g. here is a GIF of the LabelControl AutoHotkey script with its numbers:

(LabelControl AutoHotkey script: http://www.donationcoder.com/Software/Skrommel/index.html#LabelControl).

I haven’t tried it though.

You can try using Hunt and Peck.