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6 Best Free Microsoft Threat Vulnerability Management Alternatives in 2026

Explore 6 alternatives to Microsoft Threat Vulnerability Management — vetted by our editors with real user reviews, pricing, and feature comparisons.

Best free Microsoft Threat Vulnerability Management alternatives: a side-by-side view

Quick answer

If you only check three Microsoft Threat Vulnerability Management alternatives, make them Qualys VM, Nessus and ManageEngine Vulnerability Manager Plus. Qualys VM leads the list with a 4.1★ rating from real users. Compare all 6 on rating and pricing below.

Maybe Microsoft Threat Vulnerability Management costs too much, misses a feature you need, or just feels clunky. Whatever the reason, these 6 vulnerability management software free alternatives are the picks worth a closer look. We order them by SpotScore, a mix of verified user satisfaction and market presence, plus ratings and pricing. Use the table to compare at a glance, then dig into each below.

ProductSpotScoreRatingPricingBest for
Qualys VMSecure your assets, stay protected.—★★★★☆ 4.1FreeFree Trial · Quotation Basedteams of all sizes
NessusSecure your network with Nessus.—★★★★☆ 4.34(185)Freefrom $2,790/yrteams of all sizes
ManageEngine Vulnerability Manager PlusSecure your network with real-time vulnerability management.—★★★★☆ 4.3Freefrom $695/yrteams of all sizes
Qualys Patch ManagementSecure your systems with automated patch management.—Not yet ratedFreeFree Trial · Quotation Basedteams of all sizes
TAC SecuritySecure your business with comprehensive vulnerability management.—Not yet ratedFreeFree Trial · Quotation Basedteams of all sizes
Qualys Cloud PlatformStay secure with total IT infrastructure assessment.—★★★★☆ 4.2FreeFree Trial · Quotation Basedteams of all sizes
Qualys VM

Qualys VM

Secure your assets, stay protected.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.1

Add to compare

What is Qualys VM?

Qualys Vulnerability Management (VM) is a scalable, flexible, and cost-effective vulnerability management solution to identify and fix vulnerable software across the enterprise. VM continuously monitors public and local internal assets for known security vulnerabilities; identifies suspect ...

Read more about Qualys VM
Free Trial·

Qualys VM offers custom pricing plan

Nessus - Vulnerability Management Software

Nessus

Secure your network with Nessus.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.3

185 verified reviews

Add to compare

What is Nessus?

Nessus is a vulnerability scanner of its kind, giving user a complete picture of organization's security status. Instantly scan thousands of systems for the latest vulnerabilities and react to them in real time. Nessus modular architecture and the industry's most flexible licensing make it an ...

Read more about Nessus
Free TrialTry Free →

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ManageEngine Vulnerability Manager Plus - Vulnerability Management Software

ManageEngine Vulnerability Manager Plus

Secure your network with real-time vulnerability management.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.3

Add to compare

What is ManageEngine Vulnerability Manager Plus?

Vulnerability Manager Plus is a multi-OS solution that detects and mitigates exploits to secure the enterprise network. It is an end-to-end vulnerability and compliance management tool that instantly detects vulnerabilities, offers built-in remediation, and maintains compliance in real-time. ...

Read more about ManageEngine Vulnerability Manager Plus
Free TrialTry Free →·

ManageEngine Vulnerability Manager Plus offers custom pricing plan

Qualys Patch Management - Patch Management Software

Qualys Patch Management

Secure your systems with automated patch management.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is Qualys Patch Management?

Qualys Patch Management, with its powerful cloud-based platform, allows security and IT professionals to easily and efficiently identify and fix system vulnerabilities. Their unique approach combines vulnerability and threat intelligence data, enabling automated and zero-touch patch ...

Read more about Qualys Patch Management
Free Trial·

Qualys Patch Management offers custom pricing plan

TAC Security - Vulnerability Management Software

TAC Security

Secure your business with comprehensive vulnerability management.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is TAC Security?

TAC Security is a revolutionary vulnerability and risk management platform designed to help forward-thinking security businesses efficiently manage their security operations. With a comprehensive view of your organization's vulnerabilities and risks, it generates informative cyber risk ratings ...

Read more about TAC Security
Free Trial·

TAC Security offers custom pricing plan

Qualys Cloud Platform - New SaaS Software

Qualys Cloud Platform

Stay secure with total IT infrastructure assessment.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.2

Add to compare

What is Qualys Cloud Platform?

Qualys Cloud Platform provides continuous, round-the-clock monitoring, visualization and assessment of IT infrastructure, security, and compliance, with up-to-date understanding of assets possible in just two seconds. Using automated threat prioritization, patching, and other response tools, ...

Read more about Qualys Cloud Platform
Free Trial·

Qualys Cloud Platform offers custom pricing plan

What makes each Microsoft Threat Vulnerability Management alternative worth considering

Qualys VMBest for teams of all sizes

Scalable and flexible solution

Watch for: Can be overwhelming for beginners

NessusBest for teams of all sizes

Comprehensive coverage and accurate vulnerability detection due to updated plugin repository.

Watch for: Scan time and results may sometimes be inconsistent.

ManageEngine Vulnerability Manager PlusBest for teams of all sizes

Multi-OS support

Watch for: Limited advanced features

Qualys Patch ManagementBest for teams of all sizes

Automated patch remediation

Watch for: Limited to patch management

TAC SecurityBest for teams of all sizes

Risk management

Watch for: Higher cost for small businesses

Qualys Cloud PlatformBest for teams of all sizes

Why teams look for a Microsoft Threat Vulnerability Management alternative

There are a few common reasons buyers start shopping for a Microsoft Threat Vulnerability Management alternative:

  • Limited to Windows environments
  • May lack advanced features
  • Integration complexity
  • Not suitable for non-Windows assets

The buyer's checklist for a Microsoft Threat Vulnerability Management alternative

Side by side, the 6 free alternatives break down like this: 6 offer a free tier; paid plans run $695–$2790, with ManageEngine Vulnerability Manager Plus the cheapest entry point; and Nessus is the highest rated at 4.34★ across 185 reviews.

How we sort these tools.

Frequently Asked Questions (FAQs)

Stuck on something? We're here to help with all the questions and answers in one place.

The top-rated alternatives to Microsoft Threat Vulnerability Management are Nessus (4.3★), ManageEngine Vulnerability Manager Plus (4.3★), Qualys Cloud Platform (4.2★). Compare all 6 alternatives side-by-side above.

When evaluating alternatives to Microsoft Threat Vulnerability Management, prioritize: Threat Protection, Endpoint Monitoring, Asset Management, Monitoring, Vulnerability Scanning, transparent pricing, free trial availability, and integrations with your existing tools. Use the filters above to compare by feature, budget, and team size.

Migration difficulty depends on how deeply Microsoft Threat Vulnerability Management is integrated into your workflows. Most alternatives offer data export/import tools and dedicated onboarding support. We recommend shortlisting 2–3 options, running a free trial, and checking each vendor's migration guides before committing.

How to find your ideal Microsoft Threat Vulnerability Management alternative

Moving your team off Microsoft Threat Vulnerability Management

Easing off Microsoft Threat Vulnerability Management works best when you test before you commit. Export your data, confirm the new tool reads it, and verify your essential features. Pilot the change with a free trial, then roll out fully, keeping Microsoft Threat Vulnerability Management as a fallback until migration ends.

Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].