pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more

Cisco Umbrella - Cisco Umbrella is a cloud security platform that provides the first line of defense against threats on the internet.

Cisco ASA - Cisco ASA Software delivers enterprise-class security capabilities for the ASA security family in a variety of form factors.

WebTitan - WebTitan is an advanced DNS based web content filter and web security layer that blocks malware, ransomware and phishing attempts as well as providing web content control. Cloud and gateway versions available.

Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.

DNSFilter - DNSFilter offers DNS-Based Content Filtering & Threat Protection.