ChatZilla Plugins
Shows a tree for your server, channel, and private message views. With the tree you can see activity in channels and servers, part, disconnect, toggle whether to connect/join on start up, just like with the tabs. Unlike tabs, when you open many channels, their names won't be squished into one unintelligible horizontal row.
License: CC BY 3.0
Zip the plugin directory, use ChatZilla's "Install Plugin" menu, and select the zip.
Please make sure that the zip file contains init.js and oher plugin files at its top level. The zip file you download from GitHub does not work because it has the channel-tree sub directory and the plugin files under it. Here is a working zip file for the channel-tree plugin.
Place plugin directory in chatzilla/scripts in your ChatZilla profile directory. You should end up with the following file structure:
<home directory> └── .chatzilla └── xxxxxx.default └── chatzilla └── scripts └── <plugin directory> ├── init.js └── <other plugin files>