pfSense is similar to Untangle, but lacks some of the extra functionality like web filtering and antivirus, sticking more to the traditional router and firewall feature set. However, there are over three dozen third-party add-ons for easy install via the package manager. The pfSense OS is based off of FreeBSD with a custom kernel that you can install on your own hardware or virtual machine. You can also buy pfSense preloaded on their hardware or even quickly deploy in the cloud via Amazon Web Services. In addition to their professional support and services, they offer a full membership for $99 per year. For support and services, you get resources like a library of developer lead videos and digital book on pfSense, plus automatic backups.