Zenmap vs. Tenable Security Center

Zenmap is the official graphical user interface (GUI) for the Nmap Security Scanner, designed to make network scanning accessible for both beginners and experienced users. This multi-platform, free, and open-source application supports operating systems such as Linux, Windows, Mac OS X, and BSD. Zenmap simplifies the process of network discovery and security auditing by providing an intuitive interface to Nmap's powerful features.

Tenable Security Center (formerly Tenable.sc) is the industry's most comprehensive risk-based vulnerability management (RBVM) solution, enabling you to: • See all your vulnerabilities and continuously assess all assets the moment they join the network -- including transient devices that aren’t regularly connected • Predict what matters by understanding vulnerabilities in the context of business risk, as well as the criticality of affected assets • Act on each high priority vulnerability to effectively manage risk, and measure KPIs to effectively communicate