KDocker will help you dock any application in the system tray. This means you
can dock OpenOffice, XMMS, Firefox, Thunderbolt, Eclipse, anything! Just point
and click. Works for LXQT/KDE and GTK/GNOME (In fact it should work for most
modern window managers that support NET WM Specification for instance).
All you need to do is start KDocker and select an application using the mouse
and lo! the application gets docked into the system tray. The application can
also be made to disappear from the task bar.