OpenSCAP is described as 'SCAP is a line of standards managed by NIST. It was created to provide a standardized approach to maintaining the security of enterprise systems, such as automatically verifying the presence of patches, checking system security configuration settings, and examining systems for' and is a vulnerability scanner in the security & privacy category. There are more than 10 alternatives to OpenSCAP for a variety of platforms, including Linux, Windows, Mac, Web-based and SaaS apps. The best OpenSCAP alternative is Nessus. It's not free, so if you're looking for a free alternative, you could try OpenVAS or Lynis. Other great apps like OpenSCAP are Pentestly.io, Trivy, TEQNIX.io and Intruder.