Lynis - Security auditing tool for systems running Linux, macOS, BSD, and other UNIX-based systems.
Acunetix Vulnerability Scanner - Acunetix Vulnerability Scanner is a platform that offers a web vulnerability scanner and provides security testing to users for their web applications.
Silverback - Silverback 3
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
Chkrootkit - Chkrootkit is a Linux tool to locally check for signs of a rootkit. It contains:
StackPath - Secure Content Delivery Network, DDoS, WAF Service