HarfangLab Vulnerability Assessment is a commercial vulnerability assessment solution by HarfangLab. Semperis Purple Knight is a free vulnerability assessment solution by Semperis. Features, integrations, deployment and the company behind each one, side by side.
Continuous vulnerability detection and prioritization using CVE database
Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning
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Based on what each listing shows: deployment, company size, price and open source.
HarfangLab Vulnerability Assessment fits if you need both cloud and on-premises options.
Semperis Purple Knight fits if you want a cloud product, you are a startup and you need a free product.
Common questions when comparing HarfangLab Vulnerability Assessment vs Semperis Purple Knight for vulnerability assessment.
HarfangLab Vulnerability Assessment: Continuous vulnerability detection and prioritization using CVE database. Built by HarfangLab.
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.
HarfangLab Vulnerability Assessment is made by HarfangLab. 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. HarfangLab Vulnerability Assessment and Semperis Purple Knight are both Vulnerability Assessment products. Key differences: HarfangLab Vulnerability Assessment 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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