In addition to using text editors like vim or emacs and using a tiling window manager, what other programs do you use to reduce usage of the mouse? I recently discovered warpd which is similar to vimium's hint mode but works globally.
I don't ruthlessly reduce mouse use, but I prefer to stick the keyboard for a handful of reasons: speed, comfort, reducing the likelihood of repetitive stress injury as I age, and flexibility. If my trackpad fails and I can't find a mouse, I can still do what I need to do.