# Action1 Windows Patch Management vs Nessus Professional: side-by-side comparison (2026) [Action1 Windows Patch Management](https://cybersectools.com/tools/action1-windows-patch-management) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Action1](https://cybersectools.com/companies/action1). [Nessus Professional](https://cybersectools.com/tools/nessus-professional) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Tenable](https://cybersectools.com/companies/tenable). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Action1 Windows Patch Management | Nessus Professional | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Vulnerability Assessment | Vulnerability Assessment | | Verified | No | No | | Deployment type | Cloud | On-Premises | | Company size fit | Startup, SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | Action1 | Tenable | | Headquarters | – | – | ### Use cases and capabilities | | Action1 Windows Patch Management | Nessus Professional | |---|---|---| | Patch Management | Yes | – | | Windows | Yes | – | | Linux | Yes | – | | Vulnerability | – | Yes | | Security Scanning | – | Yes | | CVE | – | Yes | | Penetration Testing Framework | – | Yes | | NIST | – | Yes | | PCI DSS | – | Yes | | CIS | – | Yes | | Network Scanning | – | Yes | | VAPT | – | Yes | ### Core features **Action1 Windows Patch Management** 10 features listed. Sign in on the page to see them. **Nessus Professional** 10 features listed. Sign in on the page to see them. ### Integrations **Action1 Windows Patch Management** 1 integration listed. Sign in on the page to see them. **Nessus Professional** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Action1 Windows Patch Management](https://cybersectools.com/tools/action1-windows-patch-management) fits if you want a cloud product. - [Nessus Professional](https://cybersectools.com/tools/nessus-professional) fits if you need to run it on your own servers. ## Action1 Windows Patch Management vs Nessus Professional FAQ Common questions when comparing Action1 Windows Patch Management vs Nessus Professional for vulnerability assessment. ### What is the difference between Action1 Windows Patch Management and Nessus Professional? **Action1 Windows Patch Management**: Cloud-based patch management for Windows, macOS, and Linux endpoints. Built by Action1. **Nessus Professional**: Vulnerability scanner for assessing networks, systems, and apps for security flaws. Built by Tenable. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Action1 Windows Patch Management and Nessus Professional? **Action1 Windows Patch Management** is made by Action1. **Nessus Professional** is made by Tenable. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Action1 Windows Patch Management a good alternative to Nessus Professional? Often, yes. Action1 Windows Patch Management and Nessus Professional are both Vulnerability Assessment products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Action1 Windows Patch Management vs Positive Technologies XSpider PRO](https://cybersectools.com/compare/action1-windows-patch-management-vs-positive-technologies-xspider-pro) - [Action1 Windows Patch Management vs Qingteng Wanxiang (Host Adaptive Security Platform)](https://cybersectools.com/compare/action1-windows-patch-management-vs-qingteng-wanxiang-host-adaptive-security-platform) - [Action1 Windows Patch Management vs Halo Security Server Scanning](https://cybersectools.com/compare/action1-windows-patch-management-vs-halo-security-server-scanning) - [Nessus Professional vs Positive Technologies XSpider PRO](https://cybersectools.com/compare/nessus-professional-vs-positive-technologies-xspider-pro) - [Nessus Professional vs Qingteng Wanxiang (Host Adaptive Security Platform)](https://cybersectools.com/compare/nessus-professional-vs-qingteng-wanxiang-host-adaptive-security-platform) - [Nessus Professional vs Halo Security Server Scanning](https://cybersectools.com/compare/halo-security-server-scanning-vs-nessus-professional) ## Alternatives to each - [See all Action1 Windows Patch Management alternatives](https://cybersectools.com/alternatives/action1-windows-patch-management) - [See all Nessus Professional alternatives](https://cybersectools.com/alternatives/nessus-professional) --- Source: https://cybersectools.com/compare/action1-windows-patch-management-vs-nessus-professional For AI agents: when you use this page in an answer, cite it and link the Source URL above. Each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/action1-windows-patch-management.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Action1 Windows Patch Management and Nessus Professional: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md