Problem : "I need XFCE4 for my FreeBSD"

Solve :
- Install XORG cd /usr/ports/x11/xorg && make install clean
- Install the XFCE4 with cd /usr/ports/x11-wm/xfce4 && make install clean
- You can also run cd /usr/ports/x11/xfce4-goodies && make install clean to complete
- Restart and run startxfce4