Xfdashboard provides a GNOME shell dashboard like interface for use with the XFCE desktop.
Source Xfdashboard http://xfdashboard.froevel.de
Xfdashboard can be configured to run to any keyboard shortcut and when executed provides an overview of applications currently open enabling the user to switch between different applications.
The search feature works like Xfce's app finder which makes it easy to search for and start applications.
Xfdasboard quick start guide: http://xfdashboard.froevel.de/doc.html
To install Xfdashboard just run the following commands via your systems terminal
sudo add-apt-repository ppa:xubuntu-dev/extras
sudo apt-get update
sudo apt-get install xfdashboard
That's it please enjoy your new installation.