ONYPHE is described as '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' and is a penetration testing tool in the security & privacy category. There are four alternatives to ONYPHE, not only websites but also apps for Google Chrome and Mozilla Firefox. The best ONYPHE alternative is Shodan, which is free. Other great sites and apps similar to ONYPHE are Censys, FOFA and RedGem.
Shodan is a search engine that lets you find specific computers (routers, servers, etc.) using a variety of filters. Some have also described it as a public port scan directory or a search engine of banners.
Shodan is the most popular Web-based alternative to ONYPHE.
Shodan is the most popular free alternative to ONYPHE.
Censys is a search engine that allows computer scientists to ask questions about the devices and networks that compose the internet.
Censys is the most popular Open Source alternative to ONYPHE.
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