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 types
Platforms
- Online


Censys is described as 'Search engine that allows computer scientists to ask questions about the devices and networks that compose the internet' and is a vulnerability scanner in the network & admin category. There are more than 25 alternatives to Censys, not only websites but also apps for a variety of platforms, including Linux, Windows, Mac and SaaS apps. The best Censys alternative is Shodan, which is free. Other great sites and apps similar to Censys are Metasploit, Criminal IP, Whatoblock and Social-Engineer Toolkit.
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.


Natlas is an open source project designed to provide scalable network scanning and an interface to search through the results. For more information, visit github.com/natlas/natlas




Attack Surface Monitor discovers and tracks what your organisation exposes to the internet, from a server you control. It ships as a single Go binary with SQLite - no database server, no agents, no telemetry.

Discover, monitor, and protect your organization's entire digital footprint with real-time alerts for security changes.


