pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
TinyWall - Lightweight and non-intrusive firewall
OPNsense - OPNsense® you next open source firewall. Free Download. High-end Security Made Easy™. Offers Intrusion Prevention, Captive Portal, Traffic Shaping and more.
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
VyOS - VyOS in an open source Linux-based operating system sold and distributed by Sentrium corporations. It is geared toward IT specialists and network administrators for the purpose of securing network and company data... read more.