Apps similar to ThreatPort Security include Shodan, which has a free version. Other options are Censys, OSINT Researcher, Websecurify and detectify. In total there are six Network Monitors like ThreatPort Security for the web, Mac, Windows, Linux and iPhone.
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.
United States
Censys is a search engine that allows computer scientists to ask questions about the devices and networks that compose the internet.
United States
OSINT Researcher is a fast, login-free app that lets you discover and analyze all public GitHub repositories within any organization to support OSINT, security audits, recruiting, and collaboration scouting.
Australia
Websecurify is a powerful web application security testing environment designed from the ground up to provide the best combination of automatic and manual vulnerability testing technologies.
Detectify automates the knowledge of the best ethical hackers in the world to secure websites against 1500+ known vulnerabilities beyond OWASP Top 10.
Sweden
EU
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.
