A modal keybinding for emacs (like vim), but based on command frequency and ergonomics.
This is the most efficient editing system in the universe.
home page at http://ergoemacs.org/misc/ergoemacs_vi_mode.html
Been working on this since 2013, and since 2007 on ergoemacs-mode.
Put in 5 bucks in my patreon. https://www.patreon.com/xahlee