ClearOS
Open Source
ClearOS System (ClarkConnect) is a Linux distribution, based on CentOS and Red Hat Enterprise Linux.
Untangle
Freemium
Untangle wins a network security solution.
IPCop
Open Source
IPCop is a Linux distribution which aims to provide a simple-to-manage firewall appliance based on PC hardware.
Sophos UTM
Commercial
Sophos UTM Appliances with Firewall Sandboxing Provides Maximum Network Protection at an Affordable Price.
NethServer
Open Source
NethServer is an operating system for Linux enthusiasts, designed for small offices and medium enterprises.
Endian Firewall Community
Open Source
Endian Firewall Community is an Open Source Firewall and UTM Appliance with offers unique usability and features.
SmoothWall
Open Source
Smoothwall is an Open Source free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.
Compare pfSense with alternatives
Compare Endian Firewall Community and pfSense and decide which is most suitable for you.