Duo Security vs Tenable Nessus: Complete Comparison (2026)
Updated: March 7, 20268 min read
VS
Quick Comparison
Duo Security
Tenable Nessus
Starting Price
$3/user/mo
$2790/yr
Free Plan
Yes
No
Users
50K+ orgs
43K+ orgs
Founded
2010
2002
Rating
4.6/5
4.5/5
Best For
Organizations wanting easy-to-deploy MFA for all e...
Security teams running regular vulnerability asses...
Feature-by-Feature Comparison
Duo SecurityTenable Nessus
94Ease of Use89
96Features94
96Value for Money88
87Customer Support85
89Integrations87
90Mobile App88
AI Verdict
Duo Security leads with a ToolScout Score of 92 vs 90 for Tenable Nessus. Duo Security is best suited for Organizations wanting easy-to-deploy MFA for all employees, while Tenable Nessus excels for Security teams running regular vulnerability assessments across all IT assets. Both are strong options in the Cybersecurity space.
CHOOSE DUO SECURITY IF:
Organizations wanting easy-to-deploy MFA for all employees.
CHOOSE TENABLE NESSUS IF:
Security teams running regular vulnerability assessments across all IT assets.
Frequently Asked Questions
Is Duo Security better than Tenable Nessus?
Duo Security scores 92/100 on ToolScout compared to Tenable Nessus's 90/100. However, the best choice depends on your specific needs. Duo Security is best for Organizations wanting easy-to-deploy MFA for all employees. Tenable Nessus is best for Security teams running regular vulnerability assessments across all IT assets.
Does Duo Security have a free plan?
Yes, Duo Security offers a free plan. Paid plans start from $3/user/mo.
Does Tenable Nessus have a free plan?
No, Tenable Nessus does not offer a free plan. Plans start from $2790/yr.
Can I migrate from Duo Security to Tenable Nessus?
Migration between Duo Security and Tenable Nessus depends on the specific features you use. Both tools are in the Cybersecurity category. Check each tool's import/export options for data portability before switching.