NopSec CTEM is a commercial vulnerability assessment solution by NopSec. Semperis Purple Knight is a free vulnerability assessment solution by Semperis. Features, integrations, deployment and the company behind each one, side by side.
CTEM platform for vuln prioritization, remediation automation & reporting
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 are a startup and you need a free product.
Common questions when comparing NopSec CTEM vs Semperis Purple Knight for vulnerability assessment.
NopSec CTEM: CTEM platform for vuln prioritization, remediation automation & reporting. Built by NopSec.
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.
NopSec CTEM is made by NopSec. 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. NopSec CTEM and Semperis Purple Knight are both Vulnerability Assessment products. Key differences: NopSec CTEM is Commercial while Semperis Purple Knight is Free. Use the table above to see where features, deployment and company size fit differ.
No Vulnerability Assessment shortlist yet. This is the closest one.
Updated 2026-11-02
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