pfSense is described as 'Free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more' and is a very popular Firewall in the security & privacy category. There are more than 25 alternatives to pfSense for a variety of platforms, including Linux, Self-Hosted, Web-based, Windows and Mac apps. The best pfSense alternative is OPNsense, which is both free and Open Source. Other great apps like pfSense are IPFire, MikroTik RouterOS, Sophos UTM and ClearOS.
pfSense alternatives are mainly Firewalls, but if you're looking for
VPN Services or Operating Systems you can filter on that. Other popular filters include
Linux,
Free and
Open Source. You can also filter by region, for example
EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to pfSense.