Vade for Microsoft 365 - Vade for Microsoft 365 is a top-notch email security solution that is specifically aimed to help MSPs protect their networks from adversaries.
Cisco IronPort Web Security Appliance - Cisco IronPort Web Security Appliance
Libraesva Email Security Gateway - Libraesva Email Security Gateway provides enterprise email protection to assist small to large-sized businesses and enterprises to prevent outside attacks on their network.
Zscaler Web Security - Zscaler offers cloud-based web security solutions.
Websense Email Security - Websense Email Security is a powerful email protection tool that helps you strengthen the security of your network.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more