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Free Nessus Alternatives

The best free alternative to Nessus is Metasploit. It's not free, so if you're looking for a free alternative, you could try OpenVAS or Probely. If that doesn't suit you, our users have ranked more than 25 alternatives to Nessus and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Nessus are HostedScan Security, Tsunami, OpenSCAP and Sucuri.

Nessus alternatives are mainly Vulnerability Scanners but may also be Cloud Computing Services or WAFs. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Nessus.
This page was last updated Jun 30, 2022
Nessus
  27
  • Mac
  • Windows
  • Linux
  • Android
  • iPhone

The Nessus vulnerability scanner is the world-leader in active scanners, featuring high-speed discovery, configuration...

Learn more about Nessus

  1. Metasploit

    • Free PersonalOpen Source
    • Windows
    • Linux
    • BSD

    Metasploit Community Edition simplifies network discovery and vulnerability verification for specific exploits, increasing the effectiveness of vulnerability scanners such as Nexpose - for free.

    Most users think Metasploit is a great alternative to Nessus.
  2. OpenVAS

    • FreeOpen Source
    • Linux

    The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools offering a comprehensive and powerful vulnerability scanning and vulnerability management solution.

    Most users think OpenVAS is a great alternative to Nessus.


  3. Probely is a top-tier cloud-based DAST Scanner designed for DevOps, empowering Security and Development teams to work together to secure their web applications and APIs.

  4. HostedScan Security

    • FreemiumProprietary
    • Online
    • Software as a Service (SaaS)

    HostedScan provides 24x7 alerts and detection for security vulnerabilities. Industry-standard, open-source, vulnerability scans. Automated alerts when something changes.

  5. Tsunami

    • FreeOpen Source
    • Self-Hosted

    Tsunami is a general purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence.

    No screenshots yet


  6. OpenSCAP

    • FreeOpen Source
    • Linux

    SCAP is a line of standards managed by NIST.

    No screenshots yet
  7. Sucuri

    • FreemiumProprietary
    • Self-Hosted
    • Wordpress

    A web security portfolio offering a combination of on-premise installed security software in conjunction with a cloud hosted web application firewall and CDN.

  8. Microsoft Baseline Security Analyzer

    • FreeProprietary
    • Windows

    This vulnerability scanner for the Windows WorkStations et Servers gives you all the actions to enforce security of your Windows operating Systems.

    Discontinued

    "While MBSA version 2.3 introduced support for Windows Server 2012 R2 and Windows 8.1, it has since been deprecated and no longer developed. MBSA 2.3 is not updated to fully support Windows 10 and Windows Server 2016." Source: http://bit.ly/MBSA-removal

    No screenshots yet
  9. skipfish

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD

    A fully automated, active web application security reconnaissance tool. Key features: High speed: pure C code, highly optimized HTTP handling, minimal CPU footprint - easily achieving 2000 requests per second with responsive targets.

    Discontinued

    Skipfish is no longer maintained. Last version, 2.10 beta, released in December 2012, can be still downloaded from Google Code Archive

  10. WPSec.com

    • FreemiumProprietary
    • Online
    • Wordpress

    For all the scans WPSec.com perform they use the latest technology in vulnerability scanners. Their custom scanning technology includes the use of WPScan, the most reliable and up-to-date WordPress scanning software.

Showing 10 of 23 alternatives