Install xfce4-appfinder by entering the following commands in the terminal:
sudo apt update sudo apt install xfce4-appfinder
Description:
Application finder for the Xfce4 Desktop Environment
This is an application finder for the Xfce4 Desktop Environment. It will search for installed applications on your system.
Homepage: http://www.xfce.org/
Version: 4.12.0-2ubuntu2
Section: universe/x11