Open Source Nmap AlternativesTop IP Scanners & Network Analyzers like Nmap

The best open source alternative to Nmap is Angry IP Scanner. If that doesn't suit you, our users have ranked more than 50 alternatives to Nmap and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Nmap are Zenmap, NetPeek, Port Authority and NETworkManager by BornToBeRoot.

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Nmap alternatives are mainly Network Monitors, but if you're looking for IP Scanners or Network Analyzers you can filter on that. Other popular filters include iPad, iPhone, Windows, Linux, Mac, Open Source and Android. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Nmap.
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Alternatives list

  1. Angry IP Scanner icon

    Angry IP Scanner

     130 likes

    Open-source, cross-platform network scanner for fast and simple IP and port scanning. It's lightweight, requires no installation, utilizes multithreading for speed, and is extendable via plugins. It pings IPs, resolves hostnames, determines MAC addresses, provides NetBIOS info, and saves results in various formats.

    58 Angry IP Scanner alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    • Java
    Angry IP Scanner screenshot 1
     
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    15

    • Almost everyone thinks Angry IP Scanner is a great Nmap alternative.

    • Angry IP Scanner is the most popular Linux alternative to Nmap.

    • Angry IP Scanner is the most popular Open Source alternative to Nmap.

    • Angry IP Scanner is Free and Open SourceNmap is also Free and Open Source
    • Angry IP Scanner is LightweightNmap is not according to our users
  2. Zenmap icon

    Zenmap

     114 likes

    Zenmap is 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.

    43 Zenmap alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    Zenmap screenshot 1
     
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    1
    18
    Comments about Zenmap as an Alternative to Nmap
    jaw3l
    2

    It is not an alternative to Nmap because it is GUI for Nmap.

    Nmap Icon
    Zenmap icon

    • Almost everyone thinks Zenmap is a great Nmap alternative.

    • Zenmap is Free and Open SourceNmap is also Free and Open Source
  4. NetPeek icon

    NetPeek

     9 likes

    A modern libadwaita-based network scanner for GNOME that helps you discover devices on your local network.

    52 NetPeek alternatives

    Cost / License

    Platforms

    • Linux
    • Flathub
    NetPeek screenshot 1
     
  5. Port Authority icon

    Port Authority

     21 likes

    Android-focused port scanner quickly discovers hosts and delivers comprehensive network data. Displays local and remote device info, enabling detailed analysis for systems security.

    Cost / License

    Application types

    Platforms

    • Android
    • F-Droid
    Port Authority screenshot 1
    Port Authority screenshot 2
    Port Authority screenshot 3
     
  6. NETworkManager by BornToBeRoot icon

    NETworkManager by BornToBeRoot

     12 likes

    NETworkManager is a powerful tool for managing networks and troubleshoot network problems! It includes a variety of tools such as an IP scanner, Port Scanner, Ping Monitor, WiFi analyzer, PuTTY/RemoteDesktop with tabs or an LLDP/CDP capture (and many more) in a unified user...

    Cost / License

    Application types

    Platforms

    • Windows
    • Chocolatey
    Dashboard
     
  7. NmapSI4 icon

    NmapSI4

     2 likes

    NmapSi4 is a complete Qt-based Gui with the design goals to provide a complete nmap interface for Users, in order to menage all option of this power security net scanner and search services vulnerability.

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
     
  9. MASSCAN icon

    MASSCAN

     8 likes

    This is the fastest Internet port scanner. It can scan the entire Internet in under 6 minutes, transmitting 10 million packets per second.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    MASSCAN screenshot 1
     
  11. Zeek icon

    Zeek

     Like

    Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.

    8 Zeek alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Linux
    • BSD
     
  12. ZMap icon

    ZMap

     2 likes

    ZMap is a fast single packet network scanner designed for Internet-wide network surveys. On a typical desktop computer with a gigabit Ethernet connection, ZMap is capable scanning the entire public IPv4 address space in under 45 minutes.

    Cost / License

    Application type

    Platforms

    • Mac
    • Linux
    • BSD
    ZMap screenshot 1
     
  13. Umit Network Scanner icon

    Umit Network Scanner

     6 likes

    Umit: The Nmap Frontend: Umit was designed to accomodate and run more than one scan at time. Each scan is executed and shown inside a Scan Tab, which has a title and organize every information obtained in the scan result.

    The Scan Tab tries to facilitate your life, by making th.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    Host search parameters
     
  14. NetAlertX icon

    NetAlertX

     1 like

    Network intruder and presence detector. Scans for devices connected to your network and alerts you if new and unknown devices are found.

    15 NetAlertX alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Unraid
    • Docker
    NetAlertX screenshot 1
     

    • NetAlertX is the most popular Self-Hosted alternative to Nmap.

    • NetAlertX is Free and Open SourceNmap is also Free and Open Source
    • NetAlertX is Privacy focused and LightweightNmap is not according to our users
12 of 26 Nmap alternatives