Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
Qubes OS - Qubes is a security-oriented, free and open-source operating system for personal computers that allows you to securely compartmentalize your digital life.Download Mirrors · Qubes R4.
Trend Micro Deep Security - Excellent hybrid cloud security doesn't require your business to sacrifice operational performance. Trend Micro lets you keep business moving securely.
grsecurity - Role-based access control system, least privilege memory protection, chroot restriction, etc.
Symantec Cloud Workload Protection - Symantec Cloud Workload Protection enables business agility and cost savings by automating security for public cloud workloads. Visit Symantec to learn more.
Sysdig - Sysdig is an open source, system-level exploration that capture system state and activity from a running Linux instance, then save, filter and analyze.