strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
ftrace - A function tracer for the Linux kernel.
Tenable.io - Tenable.io Cyber Exposure platform helps to protect any asset on any computing platform and eliminate blind spots.
perf - Perf is a simple app monitoring solution paired with meaningful alerts.
AlienVault USM (from AT&T Cybersecurity) - AlienVault USM Anywhere delivers powerful threat detection, incident response, and compliance management for cloud, on-premises, and hybrid environments.