WatchGuard XTM - Discontinued Product
Check Point Firewall Software Blade
pfSense
ClearOS
RackFoundry Total Security Management
SonicWall TZ
Meraki MX Firewalls
Cyberoam
Zabbix
Graylog
Untangle NG Firewall
Malwarebytes
Check Point Firewall Software Blade - Check Point delivers the best security solutions withthe right architecture to prevent attacks in allof yourenvironments.
SonicWall TZ - Get high-speed threat prevention in a flexible, integrated security solution with the SonicWall TZ Series.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Meraki MX Firewalls - Cloud managed networking from Cisco Meraki. The easiest and most IT-friendly solution for enterprise networking needs.
ClearOS - A very good alternative for Windows Server, for free
Cyberoam - Firewall