Install geany-plugin-treebrowser by entering the following commands in the terminal:
sudo apt update sudo apt install geany-plugin-treebrowser
Description:
tree browser plugin for Geany
This plugin adds a tree browser to Geany, allowing the user to browse files using a tree view of the directory being browsed. . Geany is a small and lightweight integrated development environment using the Gtk+ toolkit.
Homepage: http://plugins.geany.org
Version: 1.32+dfsg-3
Section: universe/devel