Zenmap is described as 'The official cross-platform GUI for the Nmap Security Scanner. It is free and runs on Linux, Windows, Mac OS X, etc. Zenmap aims to make Nmap easy for beginners to use while providing advanced features for experienced Nmap users' and is a very popular IP Scanner in the network & admin category. There are more than 25 alternatives to Zenmap for a variety of platforms, including Windows, Mac, Linux, Android and Web-based apps. The best Zenmap alternative is Nmap, which is both free and Open Source. Other great apps like Zenmap are Angry IP Scanner, Fing, NetPeek and Advanced IP Scanner.