Pens: a real interface, in a pane.

A pen takes its pane the way vim takes the screen, and puts a real interface there. On your Mac or over plain ssh, in your font and theme.

Before you install one

Over plain ssh
Run the pen on the server. Nothing listens on a port, and the server needs no GPU.
Your font and theme
bateri draws a pen the way it draws its own text.
One line to install
bateri package install bateri/toppen. bateri keeps it up to date.

Download bateri

Free and openly licensed. Open it and your zsh arrives as usual; bateri handles the rest.

Download for macOS

macOS 14 or later, Apple silicon · Free software, GPL-3.0

Or with Homebrew: