This extension integrates Ubuntu AppIndicators and KStatusNotifierItems (KDE's blessed successor of the systray) and legacy tray icons into GNOME Shell.

Features:

- show indicator icons in the panel - reveal indicator menus upon click - double clicking an icon will activate the application window (if implemented by the indicator) - middle mouse click an icon to send a 'SecondaryActivate' event to the application. Support needs to be implemented in the application - supports legacy tray icons - icons can be themed, resized and effects can be applied