Censys is a search engine that allows computer scientists to ask questions about the devices and networks that compose the internet.
United States
Shodan AlternativesOnly apps categorised as Vulnerability Scanners
The best Vulnerability Scanner alternative to Shodan is Censys, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Shodan and 13 are Vulnerability Scanners so hopefully you can find a suitable replacement. Other interesting Vulnerability Scanner alternatives to Shodan are Criminal IP, Intruder, Nexpose and LeakIX.
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Most Shodan alternatives are Vulnerability Scanners, but you can also narrow the list to Penetration Testing Tools or Network Monitors. Other popular filters are Free and Open Source. You can also filter for EU-based alternatives if you prefer software from the European Union.
Alternatives list
- 30 Censys alternatives
18 Criminal IP alternativesCriminal IP protects IT assets and businesses by analyzing all years of cyber threats and prediciting exploits. Criminal IP provides real-time intelligence to enhance cybersecurity competencies in all aspects.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Since
- Since 2022
South Korea
+2
A single platform for AI pentesting, attack surface monitoring, cloud security and vulnerability management. Built for stretched security, IT and compliance teams.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Since
- Since 2016
Learn about our vulnerability management software, Nexpose. See how our vulnerability scanner prioritizes vulnerabilities and speeds up remediation.
11 LeakIX alternativesLeakIX is a search engine indexing open hosts on the internet. It focuses on listing the databases and table names and keeps a history of every successful connection.
Vulners is a high-quality correlated database of software vulnerabilities. Users can create a custom VM solution using our consolidated database through API, multiple vulnerability scanners, plugins, and many other security tools and integrations.
- United States
Enriched and structured information about every host on the Internet. Non-intrusive internet scanner, whois, domain names & SSL certs database.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Since
- Since 2022
- United States
33 skipfish alternativesA fully automated, active web application security reconnaissance tool. Key features: High speed: pure C code, highly optimized HTTP handling, minimal CPU footprint - easily achieving 2000 requests per second with responsive targets.
Cost / License
- Free
- Open Source
Application type
Since
- Since 2011
Alerts
- Discontinued
- United States
Grabber is a web application scanner. Basically it detects some kind of vulnerabilities in your website.
G
6 ThreatPort Security alternativesExternal attack surface management and threat intelligence platform that monitors your domain for vulnerabilities, misconfigurations, and active threats.
Türkiye
+3
On-demand internet scanner. Trigger a live port and service scan of any IP, CIDR or country via REST API and get fresh results in seconds.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Since
- Since 2026
Spain
EU
Zenkai is an automated website security scanner built for developers, IT teams, and agencies. It checks your site for real vulnerabilities — not just a header checklist.
Cost / License
- Paid
- Proprietary
Since
- Since 2026
Netherlands- EU
+2
United Kingdom
France
