nothing, at the moment, can replace Software Station. I think @ericbsd wants to work on a replacement, but not entirely sure.
It's in the ports tree, so it MAY work for FreeBSD? not sure how it would need to be configured properly.
Like portsnap (I think). @ericbsd has GhostBSD ports tree modified to work with the GhostBSD repos, NOT freebsd. You will hose your system using the incorrect .
Not saying that is the case, but no idea where pacman would pull from
hope that makes some sense