pfSense

pfsense is a free, open source customized distribution of freebsd tailored for use as a firewall, and router.

Free Open Source BSD

IPCop

IPCop Firewall is a Linux firewall distribution geared towards home and SOHO (Small Office/Home Office) users. The IPCop interface is very user-friendly and task-based.

Free Open Source Linux

Untangle

Untangle is a platform for deploying network based applications. The platform unites these applications around a common GUI, database and reporting.

Freemium Linux

Endian Firewall Community

Endian Firewall Community (EFW) is a "turn-key" linux security distribution that turns every system into a full featured security appliance with Unified Threat Management (UTM) functionality.

Free Open Source Linux

SmoothWall

The SmoothWall Open Source Project was set up to develop and maintain SmoothWall Express - a Free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.

Free Open Source Linux

IPFire

IPFire is a server distribution with intended to use as a firewall. It focuses on flexibility, and scales from small to middle sized business networks and home networks.

Free Open Source Linux

ZeroShell

Zeroshell is a Linux distribution for servers and embedded devices aimed at providing the main network services a LAN requires.

Free Open Source Linux Self-Hosted

CacheGuard-OS

CacheGuard OS is an Appliance oriented Operating System dedicated to Web traffic Security and Optimization.

Free Open Source Windows VirtualBox VMware vSphere Hypervisor Microsoft Hyper-V Server Proxmox Virtual Environment