ohmyzsh/plugins/tmux-cssh
..
_tmux-cssh
README.md

tmux-cssh plugin

This plugin adds autocompletion for tmux-cssh.

To use it, add tmux-cssh to the plugins array in your zshrc file:

plugins=(... tmux-cssh)

First upstream repo, now disappeared: https://github.com/dennishafemann/tmux-cssh.