vmware-guestd daemon is for time synchronization with host OS and others.
Beware, this port is for FreeBSD _guest_ OS. You don’t need to install
this ports to FreeBSD _host_ OS. This ports also installs a kernel modules
for FreeBSD guest.
If you want to run FreeBSD as a VMware guest OS, install this port
would help you. If you want to run X, install vmware-tools too.