portmgt is a small bash script that will fetch latest porttree and check if any of your installed packages needs updating or contatins vulnerabilities. It used portsnap to fetch/update port tree, and portaudit to check for vulnerabilities. After you run the script it will give you an overview of packages that needs your attation.
This is release v0.11, and it will be updated when I need support for other things.
I’m consider creating a cron-script that use the same principle.
Check out portmgt own page here at /dev/n0ll