Zenmap is the official cross-platform GUI for the Nmap Security Scanner. It is free and runs on Linux, Windows, Mac OS X, etc. Developed by Gordon Lyon
License: Open Source
Angry IP Scanner is a lightweight, user-friendly tool ideal for quick network scans, while Zenmap offers advanced features for detailed network analysis and customization, making it more suitable for experienced users and larger networks. The choice between them depends on the user's needs—whether they prioritize speed and simplicity or depth and flexibility.