AllTray is a very light-weight and useful tool for Ubuntu which lets you dock any applications to the system tray that do not have a native tray icon. There are so many such applications which don’t have native tray icon like Mozilla Thunderbird, Evolution, etc, now you can easily dock such applications to the system tray. It works on almost all types of desktops like KDE, Gnome, Xfce etc. Lets explore how we can install and use it in Ubuntu.
First of all open terminal from Applications > Accessories > Terminal as shown in the following screenshot.
Now, once the terminal is loaded, you can run the following command to install it in your system.
sudo apt-get install alltray
It will be installed instantly, you can launch it from Applications > Accessories > AllTray. Now, to dock the applications to the system tray, just launch AllTray and click the application you wish to dock. Thats all, I have docked Mozilla Thunderbird as shown in following screenshot.
Additionally, clicking the Close button from a restored window will minimize it right back to the system tray. Enjoy!