http://www.simplewallsoftware.com/
I'm not sure how long it's been out, I can't find much about it via Google....but a member of another tech forum I hang at put a post up about it a week ago.
Yesterday I downloaded it and installed on a Lenovo ThinkCentre mini desktop with a Core 2 Duo. I like the modern look of the GUI, and it has some interesting features.
They have a free version, and a pay for version...at 95 bucks/year. Quite inexpensive.
Pretty easy setup/install routine. Easy dashboard and web management.
Another option for those that like to build their own UTM routers that have more security features than some off the shelf Stinksys or Nutgear or DStink basic router.