Yes, both zANTI and Qualys VM offer a Free Trial.
zANTI is designed for Individuals, Freelancers and Small Business.
Qualys VM is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both zANTI and Qualys VM are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to zANTI includes Tenable.io, InsightVM, BeyondTrust Vulnerability Management, Qualys VM, Nessus, Microsoft Threat Vulnerability Management, ManageEngine Vulnerability Manager Plus, Tanium Comply, Qualified, Workvivo, Pentest-Tools.com and IFTTT.
Some top alternatives to Qualys VM includes and undefined.