pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
StackPath - Secure Content Delivery Network, DDoS, WAF Service
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
Avast - Avast security software products are developed for Microsoft Windows, Mac OS X, Android and Linux users by AVAST Software.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
Flexera Software Vulnerability Manager - Flexera Software Vulnerability Manager provides solutions to continuously track, identify and remediate vulnerable applications.