Zenmap Alternatives (September 2025)

Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.

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1.
Network Monitoring Tools from Intermapper | Fortra
https://www.fortr
.com/product-lines/intermapper/

Intermapper provides industry-leading network monitoring tools for Windows, Linux, and Mac. IT pros love it for its visual, dynamic network maps, real time alerts, and user friendly interface. Start a free 30 day trial.

2.
🖧 Network Inventory Software from MIS Utilities
https://www.misutilitie
.com/

Network Inventory Software to scan all computers in your network. ⚛ Hardware Inventory ⚛ Software Inventory ⚛ Get complete information about operating system, service packs, hotfixes, hardware inventory, software inventory and running processes on remote PCs.

3.
Kali Linux | Penetration Testing and Ethical Hacking Linux Distribution
https://www.kal
.org/

Home of Kali Linux, an Advanced Penetration Testing Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.

4.
IP Address & Switch Port Management Software – OpUtils
https://www.manageengin
.com/products/oputils/

OpUtils is an IP address & switch port management software that helps in managing IP's & switch ports along with rogue detection. Get a free trial today.

5.
The Network Mapping Tool for Network Administrators | UVexplorer
https://www.uvexplore
.com/

Discover the best network mapping tool for IT and network administrators, UVexplorer. Discover and document your network with ease today!

6.
Web Application Security, Testing, & Scanning - PortSwigger
https://portswigge
.net/

PortSwigger offers tools for web application security, testing, & scanning. Choose from a range of security tools, & identify the very latest vulnerabilities.

7.
NetFlow Traffic Analyzer | Real-Time NetFlow Analysis - ManageEngine NetFlow Analyzer
https://www.manageengin
.com/products/netflow/

NetFlow Analyzer is a real-time NetFlow traffic analysis tool that provides visibility into the network bandwidth performance. Download a free trial now!

8.
LibreNMS
https://www.librenm
.org/

LibreNMS is an autodiscovering PHP/MySQL-based network monitoring system.

9.
Network Configuration Management (NCM) Tools - ManageEngine Network Configuration Manager
https://www.manageengin
.com/network-configuration-manager/

ManageEngine Network Configuration Manager is a multi-vendor network change & configuration management software for switches, routers, and firewalls. Try now!

10.
Metasploit | Penetration Testing Software, Pen Testing Security | Metasploit
https://www.metasploi
.com/

Find security issues, verify vulnerability mitigations & manage security assessments with Metasploit. Get the world's best penetration testing software now.

12.
Firewall Log, Policy, Rule Analysis, Change Management, Security Audit Software - Firewall Analyzer
https://www.manageengin
.com/products/firewall/

ManageEngine Firewall Analyzer is an agent-less Firewall, VPN, Proxy Server log analysis and configuration management software to detect intrusion, monitor bandwidth and Internet usage

13.
Network Monitoring Software | Domotz
https://www.domot
.com/

Domotz is a network monitoring software designed for IT professionals and MSPs. Gain real-time visibility on any network. Start Your Free Trial Now.

14.
Best Network Management Software Solution - Auvik Networks
https://www.auvi
.com/

Auvik is cloud-based network management software for today’s changing workforce. Gain true network visibility and control. Use Auvik free for 14 days.

15.
Vulnerability scans, automated for any business
https://hostedsca
.com/

Online automated vulnerability scans for continuous monitoring of websites, servers, and applications. Test our free forever version.

16.
Network Monitoring Software & Solutions - ManageEngine OpManager
https://www.manageengin
.com/network-monitoring/

ManageEngine OpManager is an easy to use network monitoring software & an affordable network monitoring solution to monitor network devices such as routers, switches, & more. Try now!

17.
Ostinato Traffic Generator for Network Engineers
https://ostinat
.org/

Ethernet/IP packet generator, 10/40/100G network traffic generator and tester. Load and functional tests. GUI and Python-API. No special hardware required

18.
Automated Network Scanning and Assessments | RapidFire Tools
https://www.rapidfiretool
.com/products/network-assessment/

Comprehensive network scanning and assessments made easy with Network Detective Pro. Get detailed reports revealing every issue and risk, all scored and prioritized with built-in expert remediation guidance.

19.
FileZilla - The free FTP solution
https://filezilla-projec
.org/

FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge.

20.
MobaXterm free Xserver and tabbed SSH client for Windows
https://mobaxterm.mobate
.net/

Free X server for Windows with tabbed SSH terminal, telnet, RDP, VNC, Xdmcp, Mosh and X11-forwarding. Portable or installer version.

22.
Nessus Vulnerability Scanner: Network Security Solution | Tenable®
https://www.tenabl
.com/products/nessus/

Find out more about Nessus - the trusted gold standard for vulnerability assessment, designed for modern attack surfaces - used by thousands of organizations.

23.
Nagios Network Analyzer | Nagios
https://www.nagio
.com/products/nagios-network-analyzer/

Instantly access vital NetFlow and sFlow data sources, server system metrics, and network anomalies with Nagios Network Analyzer.

24.
AWStats - Open Source Log File Analyzer for advanced statistics (GNU GPL)
https://awstats.sourceforg
.io/

AWStats Official Web Site - Compile and generate advanced graphical web, ftp or mail statistics with a logfile analysis (For IIS, Apache,... distributed under GNU GPL).

25.
GFI LanGuard
https://gf
.ai/products-and-solutions/network-security-solutions/languard/

GFI LanGuard enables you to manage and maintain endpoint protection across your network. It provides visibility into all the elements in your network, helps you assess where there may be potential vulnerabilities, and enables you to patch them. The patch management and network auditing solution is easy-to-use and easy-to-deploy.

26.
SentinelOne Singularity Ranger – Network Discovery Solution for Global Visibility
https://www.sentinelon
.com/platform/singularity-ranger/

Singularity Ranger: A cloud-delivered, software-defined network discovery solution designed to add global network visibility and control with minimal friction.

27.
Intruder | Vulnerability Management Made Easy
https://intrude
.io/

Secure your attack surface with automated vulnerability scanning, continuous network monitoring, and proactive threat response in one platform. Try for free.

28.
Graphical Network Monitoring and Troubleshooting | PingPlotter
https://www.pingplotte
.com/

Monitor latency, packet loss, and jitter. Plot results on an infinite timeline. Find the source of problems. Share the evidence.

30.
BeEF - The Browser Exploitation Framework Project
https://beefprojec
.com/

BeEF is a security tool, allowing a penetration tester or system administrator additional attack vectors when assessing the posture of a target

31.
VeraCrypt - Free Open source disk encryption with strong security for the Paranoid
https://www.veracryp
.fr/

VeraCrypt is free open-source disk encryption software for Windows, Mac OS X and Linux. In case an attacker forces you to reveal the password, VeraCrypt provides plausible deniability. In contrast to file encryption, data encryption performed by VeraCrypt is real-time (on-the-fly), automatic, transparent, needs very little memory, and does not involve temporary unencrypted files.

32.
Penetration testing toolkit, ready to use - Pentest-Tools.com
https://pentest-tool
.com/

Pentest-Tools.com is a cloud-based toolkit for offensive security testing, focused on web applications and network penetration testing.

33.
Canonical Netplan
https://netpla
.io/

Backend-agnostic network configuration in YAML.

34.
VueScan Scanner Software for macOS, Windows, and Linux
https://www.hamric
.com/

VueScan is the easiest way to get your scanner working on macOS, Windows and more. VueScan includes a driver for your scanner even though it isn't support anymore.

35.
Enterprise Open Source and Linux | Ubuntu
https://ubunt
.com/server/

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

36.
Enterprise Open Source and Linux | Ubuntu
https://ubunt
.com/desktop/

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

37.
Enterprise Open Source and Linux | Ubuntu
https://ubunt
.com/openstack/

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

38.
Tabby - a terminal for a more modern age
https://tabb
.sh/

Tabby is a free and open source SSH, local and Telnet terminal with everything you'll ever need.

39.
40.
Home – BackBox Software
https://www.backbo
.com/

Security-Centric Automation for Network Teams The BackBox Network Automation Platform easily and reliably automates Network Configuration Management, Network Vulnerability Management, and Network Operations tasks for devices from over 180 vendors on more than 100,000 networks worldwide. Request a Custom demo Save Time Reduce Manual Errors Automate Security and Compliance PRESS RELEASE BackBox Named 2024 Global

41.
Rancher Desktop by SUSE
https://rancherdeskto
.io/

Open source desktop application that provides Kubernetes, Container Management, bundled utilities on the desktop

42.
Network Monitoring Software for Enterprise IT Teams - Entuity
https://www.entuit
.com/

Entuity software delivers all-in-one network monitoring software for faster insights and manageable network alerts. Learn more here.

44.
Unimus by NetCore j.s.a. | Network Automation, Configuration Backup & Change Management
https://unimu
.net/

Network Automation, Configuration Backup, Change Management and Configuration Auditing made painless and affordable for a network of any size.

45.
KiCad EDA - Schematic Capture & PCB Design Software
https://www.kica
.org/

Open source EDA / electronics CAD software for Windows, macOS and Linux. Use schematic capture, create PCB designs and view them in 3D, all forever free.

47.
Probely - Automated API and Web Application Vulnerability Scanner — Probely
https://probel
.com/

Probely is a web application and API vulnerability scanner for agile teams. Automate Security Testing by adding Probely into your SDLC and CI/CD pipelines.

48.
WPScan: WordPress Security Scanner
https://wpsca
.com/

WPScan is an enterprise vulnerability database for WordPress. Be the first to know about vulnerabilities affecting your WordPress core, plugins & themes.

49.
Free Firewall | ZoneAlarm
https://www.zonealar
.com/software/free-firewall/

With over 90 million downloads, ZoneAlarm is one of the world's most popular Firewall software products.

50.
IT Infrastructure Monitoring Made Easy - WhatsUp Gold
https://www.whatsupgol
.com/

Progress (formerly Ipswitch) WhatsUp Gold provides complete visibility into the status and performance of applications, network devices and servers in the cloud or on-premises.

51.
ExtraHop: Cloud-Native Network Detection and Response
https://www.extraho
.com/

ExtraHop provides cloud-native cybersecurity solutions to help enterprises detect and respond to advanced threats—before they compromise your business.

52.
Snort - Network Intrusion Detection & Prevention System
https://www.snor
.org/

Snort is an open-source, free and lightweight network intrusion detection system (NIDS) software for Linux and Windows to detect emerging threats.

53.
OSSEC - World's Most Widely Used Host Intrusion Detection System - HIDS
https://www.osse
.net/

OSSEC is a multiplatform, open source and free Host Intrusion Detection System (HIDS). You can tailor OSSEC for your security needs through its extensive configuration options, adding custom alert rules and writing scripts.

55.
OpenZeppelin
https://www.openzeppeli
.com/

The standard for secure blockchain applications | Smart Contracts Audit

58.
ShareX - The best free and open source screenshot tool for Windows
https://getshare
.com/

ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to many supported destinations you can choose from.

59.
Zabbix :: The Enterprise-Class Open Source Network Monitoring Solution
https://www.zabbi
.com/

Zabbix is a mature and effortless enterprise-class open source monitoring solution for network monitoring and application monitoring of millions of metrics.

60.
Home - Linux Mint
https://linuxmin
.com/

Linux Mint is an elegant, easy to use, up to date and comfortable desktop operating system.

61.
Real-Time Operating System - FreeRTOS - AWS
https://aws.amazo
.com/freertos/

FreeRTOS is an open source, real-time operating system for microcontrollers and microprocessors that makes small, low-power devices easier to program, deploy, and secure.

62.
Acunetix | Web Application Security Scanner
https://www.acuneti
.com/

Acunetix is an end-to-end web security scanner that offers a 360 view of an organization’s security. Allowing you to take control of the security of all you web applications, web services, and APIs to ensure long-term protection. Acunetix’s scanning engine is globally known and trusted for its unbeatable speed and precision.

63.
Paperscan: Best Scanner Software for Windows (Free or Paid)
https://paperscan.orpali
.com/

Fast, reliable & accurate scanning software for Windows: free, home or pro versions. Includes scanning 100+ file types, OCR, image correction, printing & more.

64.
Firedome - Software-only NDR empowering security teams
https://firedom
.io/

Firedome Curve™ provides organizations with the means to preemptively stop supply chain, insider threat, ransomware, and other complex attacks that might otherwise evade detection by current security protocols and controls

65.
Web Debugging Proxy and Troubleshooting Tools|Fiddler
https://www.teleri
.com/fiddler/

Explore the Fiddler family of web debugging proxy tools and troubleshooting solutions. Easily debug, mock, capture, and modify web and network traffic.

66.
Autopsy - Digital Forensics
https://www.autops
.com/

Autopsy® is the premier end-to-end open source digital forensics platform. Built by Basis Technology with the core features you expect in commercial forensic tools, Autopsy is a fast, thorough, and efficient hard drive investigation solution that evolves with your needs.

67.
Network Penetration Testing Platform | vPenTest
https://www.vonah
.io/services/network-penetration-testing/

vPenTest is an automated network penetration testing platform that makes pentesting scalable, accurate, faster, consistent, and not prone to human error.

68.
Self hosted password manager for business and companies with auditable source code
https://passwor
.pro/

Passwork provides an advantage of effective teamwork with corporate passwords in a totally safe environment. Employees can quickly access all their passwords, while the rights and actions are closely supervised and managed by local system administrators.

69.
Network detection and response (NDR) solutions - IBM Security
https://www.ib
.com/products/qradar-siem/ndr/

Catch hidden threats on your networks before it's too late with network visibility and advanced analytics from IBM QRadar NDR

70.
GlassWire - Personal Firewall & Network Monitor
https://www.glasswir
.com/

GlassWire is a modern personal firewall and network monitor with over 40 million downloads. Download GlassWire free!

71.
Cuckoo Sandbox - Automated Malware Analysis
https://cuckoosandbo
.org/

Cuckoo Sandbox is the leading open source automated malware analysis system.

72.
Versa Secure SD-WAN | Versa Networks
https://versa-network
.com/products/sd-wan/

Versa SecureSD-WAN Empowering the future of WAN Edge connectivity with agility, security, and scale GET A DEMO FREE TRIAL Overview Features Plans Resources A comprehensive networking solution Versa Secure SD-WAN is a comprehensive networking solution that provides end-to-end visibility, control, and security for your enterprise's digital transformation. It integrates software-defined networking (SDN) and advanced security

74.
Cisco FindIT Network Management - Cisco
https://www.cisc
.com/c/en/us/products/cloud-systems-management/findit-network-management/index.html/

Cisco FindIT Network Manager is a network management tool for deploying and maintaining Cisco 100 to 500 Series switches, routers, and wireless access points.

75.
NetSupport Manager - Secure Remote Control
https://www.netsupportmanage
.com/

Secure, multi-platform remote control and support software - for any organisation across any sector. Try for FREE today.

76.
SNMP .NET Component Download
https://snmp-net-component.apponi
.com/

SNMP .NET Component Download - SnmpSource offers users a comprehensive toolkit for quick development.

78.
Mind Map Online Service IOctopus - Create Beautiful Organic MindMaps Easy
https://ioctopu
.online/

🐙 Dive deep into your mind and explore new possibilities - the ultimate online mind mapping tool for brainstorming, planning and collaborating. Try demo now, no registration required.

79.
BitNinja Server Security Platform - Elevate Your Linux Server Security
https://bitninj
.io/

A server security suite with centralized dashboard containing an AI-powered Linux malware scanner, robust IP reputation, WAF, Spam Detection.

80.
Network Detection and Response (NDR) | Verizon
https://www.verizo
.com/business/products/security/threat-detection/network-detection-response/

With Verizon's Network Detection & Response (NDR), gain advanced threat intelligence and expert support to protect your business from suspicious activities and cyber attacks.

81.
Core Impact | Penetration Testing Software | Core Security
https://www.coresecurit
.com/products/core-impact/

Discover how the powerful penetration testing solution, Core Impact, enables you to safely and efficiently test your environment by automating the techniques used by hackers. Get started today with this pen testing solution that is ideal for both new and advanced pen testers.

82.
Home - GLPI Project
https://glpi-projec
.org/

GLPI is a leading Service Management solution which offers Helpdesk, CMDB, Asset Management, Project Management on one platform.

83.
InsightVM Vulnerability Management Tool - Rapid7
https://www.rapid
.com/products/insightvm/

With Rapid7's vulnerability management tool you will be able to understand and prioritize risk with clarity. Learn more about InsightVM and start a free trial today.

84.
Aikido — AppSec Platform For Code & Cloud Security
https://www.aikid
.dev/

Discover vulnerabilities and security issues with Aikido's all-in-one AppSec platform. Start free and get your web app secured in 2 minutes.

85.
Vulnerability Management Tool & Software - ManageEngine Vulnerability Manager Plus
https://www.manageengin
.com/vulnerability-management/

Vulnerability management tool lets you manage vulnerabilities from a centralized console & offers built-in patching. Try our enterprise vulnerability management software now!

86.
NetCrunch - Monitor, Alert, Visualize | AdRem Software
https://www.adremsof
.com/

Manage networks, servers, devices, traffic, web, cloud services, and applications with NetCrunch - a versatile, agentless system running on Windows on-prem

87.
WinMerge - You will see the difference…
https://winmerg
.org/

WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

88.
Sandworm Security: JavaScript & PHP Security Audits And License Compliance
https://sandwor
.dev/

Open source tools for securing JavaScript and PHP 🪱 Audit for security vulnerabilities, license issues, and enforce compliance. Guard your app against supply chain attacks with per-module permissions.

89.
Data Protection, Privacy Observability and AI Governance Solutions | Zendata
https://www.zendat
.dev/

Secure Customer Information and Protect Your Organisation's Data With Easy To Use Data Protection, Privacy Observability and AI Governance Solutions.

90.
Ekahau: Wi-Fi Optimization, Design, Spectrum Analysis for Business-Critical WLANs
https://www.ekaha
.com/

The leading Wi-Fi tools for optimizing, designing and troubleshooting wireless networks with best-in-class spectrum analysis and heatmapping.

91.
Free Online Survey Software and Tools | QuestionPro®
https://www.questionpr
.com/

Free survey software: QuestionPro online survey software to create surveys and questionnaires in minutes! Use our free survey platform with 80+ question-types, ready made templates, multiple survey distribution & data collection option and robust survey analytics dashboards.

92.
Apple Remote Desktop on the Mac App Store
https://apps.appl
.com/us/app/apple-remote-desktop/id409907375/

Apple Remote Desktop is the best way to manage the Mac computers on your network. Distribute software, provide real-time online help to end-users, create detail…

93.
Falco
https://falc
.org/

Why Falco? Strengthen container security The flexible rules engine allows you to describe …

94.
Next Generation Managed Security Services | ThreatSpike
https://www.threatspik
.com/

Stay on top of security issues with our cloud-based managed cybersecurity system. With forensics, data loss prevention and more, your devices are fully protected.

95.
Mailspring - The best free email app
https://www.getmailsprin
.com/

Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more.

96.
Beagle Security: Web Application & API Penetration Testing Tool
https://beaglesecurit
.com/

Beagle Security helps identify vulnerabilities in your web apps, APIs & GraphQL and remediate them with actionable insights before hackers harm you in any manner.

97.
Network Security Monitoring | LevelBlue
https://cybersecurity.at
.com/solutions/network-security-monitoring/

Stay vigilant with LevelBlue's Network Security Monitoring. Real-time insights and proactive defense against threats targeting your network.

98.
SIEM | Server Monitoring | Compliance Training
https://www.cornerbowlsoftwar
.com/

Maximize your security and uptime with Corner Bowl Software, offering cost-effective SIEM, server monitoring, auditing software and compliance training for IT.

99.
Network Traffic Generator & Stress Test - WAN Killer | SolarWinds
https://www.solarwind
.com/engineers-toolset/use-cases/traffic-generator-wan-killer/

Use network traffic generator to perform WAN killer stress tests and discover 60 other network management tools in SolarWinds Engineer’s Toolset. Free trial!