Natlas is described as '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' and is an app in the Network & Admin category. There are eight alternatives to Natlas for a variety of platforms, including Online / Web-based, Mac, Windows, Linux and BSD. The best alternative is Shodan, which is free. Other great apps like Natlas are Censys (Freemium, Open Source), ZoomEye (Freemium), Vega (Free, Open Source) and IVRE (Free, Open Source).
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.
Vega is a free and open source scanner and testing platform to test the security of web applications. Vega can help you find and validate SQL Injection, Cross-Site Scripting (XSS), inadvertently disclosed sensitive information, and other vulnerabilities.
A search engine which collects, processes, and provides structured information about network elements using an OSINT techniques. Provides detailed info on the following elements: DNS, AS, IPv4 Hosts, Ports, Banners, Digital Certificates, and more.