TinyWall - Lightweight and non-intrusive firewall
Sophos UTM - Sophos UTM integrates complete security software within a single appliance.
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
F5 Networks - F5 application services ensure that applications are always secure and perform the way they should—in any environment and on any device.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.