Action1 Free Initial Vulnerability Assessment vs Nessus Professional: side-by-side comparison (2026)
Action1 Free Initial Vulnerability Assessment is a commercial vulnerability assessment solution by Action1. Nessus Professional is a commercial vulnerability assessment solution by Tenable. Features, integrations, deployment and the company behind each one, side by side.
Free vulnerability assessment for unlimited endpoints with patching capabilities
Vulnerability scanner for assessing networks, systems, and apps for security flaws.
Side-by-side comparison
Feature
Action1 Free Initial Vulnerability Assessment
Nessus Professional
Pricing model
Commercial
Commercial
Category
Vulnerability Assessment
Vulnerability Assessment
Deployment and fit
Deployment type
Cloud
On-Premises
Company size fit
Startup, SMB, Mid-Market, Enterprise
Startup, SMB, Mid-Market, Enterprise
Company
Company
Action1
Tenable
Use cases and capabilities
Patch Management
Yes
No
Third Party Security
Yes
No
Windows Security
Yes
No
Vulnerability
No
Yes
Security Scanning
No
Yes
CVE
No
Yes
Penetration Testing Framework
No
Yes
NIST
No
Yes
PCI DSS
No
Yes
CIS
No
Yes
Network Scanning
No
Yes
VAPT
No
Yes
Core features
10 features listed
10 features listed
Integrations
5 integrations listed
No integrations listed
Need help choosing?
See more solutions in this category, or build a security stack from your picks.
