Qualys VM offers Free Trial, but Nucleus does not.
Nucleus is designed for Large Enterprises and Medium Business.
Qualys VM is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Nucleus begins at $11/Year, while pricing details for Qualys VM are unavailable.
Some top alternatives to Nucleus includes InsightVM, BeyondTrust Vulnerability Management, Qualys VM, Nessus, Microsoft Threat Vulnerability Management, Flexera Software Vulnerability Management, ManageEngine Vulnerability Manager Plus, Kenna Security, Unified VRM and Snyk.
Some top alternatives to Qualys VM includes and undefined.