Lynis - Security auditing tool for systems running Linux, macOS, BSD, and other UNIX-based systems.
StackPath - Secure Content Delivery Network, DDoS, WAF Service
Silverback - Silverback 3
Flexera Software Vulnerability Manager - Flexera Software Vulnerability Manager provides solutions to continuously track, identify and remediate vulnerable applications.
Chkrootkit - Chkrootkit is a Linux tool to locally check for signs of a rootkit. It contains:
Avast - Avast security software products are developed for Microsoft Windows, Mac OS X, Android and Linux users by AVAST Software.