DD-WRT
Open Source
DD-WRT is free Linux-based firmware for several wireless routers, most notably the Linksys WRT54G.
ClearOS
Open Source
ClearOS System (ClarkConnect) is a Linux distribution, based on CentOS and Red Hat Enterprise Linux.
Endian Firewall Community
Open Source
Endian Firewall Community is an Open Source Firewall and UTM Appliance with offers unique usability and features.
pfSense
Open Source
pfSense is an open source firewall/router computer software distribution based on FreeBSD.
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.
Compare SmoothWall with alternatives
Compare Untangle and SmoothWall and decide which is most suitable for you.
Compare Endian Firewall Community and SmoothWall and decide which is most suitable for you.