ShortCat uses the accessibility API to put Vimium-style keyboard links on buttons and text fields in any app.
I find that Vimium works faster in Firefox than using ShortCat to click around websites, so I use both, but ShortCat technically should do everything (clicking-wise) that Vimium does.
I wonder if it has to do with accessibility API thread locking. I found a different extension I used to emulate an i3 style environment suffered when I used the Unity game engine. It ended up being limitations of the accessibility API.
This delay is configurable. The delay is there so you can actually type a bit before the UI pops up, and then the UI will be filtered to just your selection.
As I understand it, a payment system is in the works. I would gladly fork over some cash to support ShortCat. Looks like someone recommended Homerow, which appears to be pretty comparable to ShortCat, and it has a one-time purchase option.
ShortCat uses the accessibility API to put Vimium-style keyboard links on buttons and text fields in any app.
I find that Vimium works faster in Firefox than using ShortCat to click around websites, so I use both, but ShortCat technically should do everything (clicking-wise) that Vimium does.