pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
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.
Meraki MX Firewalls - Cloud managed networking from Cisco Meraki. The easiest and most IT-friendly solution for enterprise networking needs.
TinyWall - Lightweight and non-intrusive firewall
SonicWall TZ - Get high-speed threat prevention in a flexible, integrated security solution with the SonicWall TZ Series.
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.