slackbuilds_ponce/desktop/thunar-archive-plugin
..
README
slack-desc
thunar-archive-plugin.info
thunar-archive-plugin.SlackBuild

Thunar Archive Plugin for Xfce's Thunar File Manager

The thunar-archive-plugin is a plugin for the Thunar File Manager, which 
adds archive operations to the file context menus. Using this plugin you 
will be able to extract and create archive files from within Thunar with 
a single click.

You'll probably want xarchiver installed for this to be useful.