This plugin provides a panel area for status notifier items (application indicators). Applications may use these items to display their status and interact with user. This technology is a modern alternative to systray and has the freedesktop.org specification.

• Compile or install xfce4-statusnotifier-plugin
• Right-click the panel → Add New Items
• Add the Status Notifier Plugin

There is already a running service which works with status notifier items. Most probably it's the indicator-application service which is used by xfce4-indicator-plugin. Make sure this service is not running: remove this indicator from xfce4-indicator-plugin and remove the service from autostart.

• gio-2.0
• libxfce4ui
• libxfce4util-2
• libxfce4-panel-2.0
• dbusmenu-gtk3