kakoune

Kakoune is a code editor that implements Vi’s "keystrokes as a text editing language" model. As it is also a modal editor, it is somewhat similar to the Vim editor (after which Kakoune was originally inspired).

Kakoune can operate in two modes: normal and insertion. In insertion mode, keys are directly inserted into the current buffer. In normal mode, keys are used to manipulate the current selection and to enter insertion mode.

Kakoune has a strong focus on interactivity. Most commands provide immediate and incremental results, while being competitive with Vim in terms of keystroke count.