What are the key differences between Shodan and Tenable Nessus?

Compare Shodan and Tenable Nessus side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Shodan and Tenable Nessus scored?

Shodan has an AI score of 8.9/10 and Tenable Nessus has an AI score of 8.8/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

Shodan vs Tenable Nessus 2026 - Compared

Shodan

Tenable Nessus

WINNER Shodan

Shodan edges ahead with a score of 8.9/10 compared to 8.8/10 for Tenable Nessus. While both are highly rated in their re...

emoji_events WINNER

Shodan

8.85 Great

Security Software Get Shodan open_in_new

Tenable Nessus

8.80 Great

Security Software Get Tenable Nessus open_in_new

psychology AI Verdict

Shodan edges ahead with a score of 8.9/10 compared to 8.8/10 for Tenable Nessus. While both are highly rated in their respective fields, Shodan demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: Shodan

verified Confidence: Low

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description Overview

Shodan

Shodan is a search engine that indexes internet-connected devices – including servers, routers, and industrial control systems – revealing their exposed network services and configurations to reveal potential vulnerabilities and operational details.

Tenable Nessus

Tenable Nessus is a vulnerability scanner that identifies weaknesses in systems and applications by analyzing configurations and comparing them against a comprehensive database of known vulnerabilities and benchmarks.