Action1 Windows Patch Management is a commercial vulnerability assessment solution by Action1. Semperis Purple Knight is a free vulnerability assessment solution by Semperis. Features, integrations, deployment and the company behind each one, side by side.
Cloud-based patch management for Windows, macOS, and Linux endpoints
Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning
See more solutions in this category, or build a security stack from your picks.
Based on what each listing shows: deployment, company size, price and open source.
Semperis Purple Knight fits if you need a free product.
Common questions when comparing Action1 Windows Patch Management vs Semperis Purple Knight for vulnerability assessment.
Action1 Windows Patch Management: Cloud-based patch management for Windows, macOS, and Linux endpoints. Built by Action1.
Semperis Purple Knight: Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning. Built by Semperis.
The table above shows where their features, integrations, deployment and company size fit differ.
Action1 Windows Patch Management is made by Action1. Semperis Purple Knight is made by Semperis. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Action1 Windows Patch Management and Semperis Purple Knight are both Vulnerability Assessment products. Key differences: Action1 Windows Patch Management is Commercial while Semperis Purple Knight is Free. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-02
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