I’ve recently played with pkgin under NetBSD and searched to make it work under FreeBSD. Anyway it’s not really compatible. I saw old unmaintained version, but no one worked for me as expected :-(.
After a few searches, I found pkg2ng :-). That’s THE tool for FreeBSD. But unfortunately, as written in the wiki :
As a consequence of the security incident on 11th November 2012, for the time being pre-compiled packages for pkgng are not available from any official FreeBSD repository.
