

The best free Penetration Testing alternative to Shodan is FOFA. If that doesn't suit you, our users have ranked more than 25 alternatives to Shodan and five of them are free Penetration Testing Tools so hopefully you can find a suitable replacement. Other interesting free Penetration Testing Tool alternatives to Shodan are ONYPHE, TEQNIX.io, Netlas.io and Grabber Web Application Scanner.


ONYPHE is a search engine for open-source and cyber threat intelligence data collected by crawling various sources available on the Internet or by listening to Internet background noise.
TEQNIX is a platform with a number of tools and strategies for penetration testers, red teamers and secops. It promotes automation with scanners and utilities and also assist in a real-time attack situation.



Enriched and structured information about every host on the Internet. Non-intrusive internet scanner, whois, domain names & SSL certs database.



Netlas.io is the most popular Android alternative to Shodan.
Grabber is a web application scanner. Basically it detects some kind of vulnerabilities in your website.