A-LIGN Vulnerability Assessment Service vs Semperis Purple Knight: Side-by-Side Comparison (2026)

A-LIGN Vulnerability Assessment Service: Vulnerability scanning service for network and application-level assessments. built by A-LIGN. Core capabilities include Network layer vulnerability scanning, Application level vulnerability scanning, Authenticated and unauthenticated scans..

Semperis Purple Knight: Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning. built by Semperis. Core capabilities include Scans for 185+ indicators of exposure and indicators of compromise, Security assessment for Active Directory, Entra ID, and Okta, Security report card with scores across five categories..

Both serve the Vulnerability Assessment market but differ in approach, feature depth, and target audience.

A-LIGN Vulnerability Assessment Service differentiates with Network layer vulnerability scanning, Application level vulnerability scanning, Authenticated and unauthenticated scans. Semperis Purple Knight differentiates with Scans for 185+ indicators of exposure and indicators of compromise, Security assessment for Active Directory, Entra ID, and Okta, Security report card with scores across five categories.

A-LIGN Vulnerability Assessment Service is developed by A-LIGN. Semperis Purple Knight is developed by Semperis. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

A-LIGN Vulnerability Assessment Service and Semperis Purple Knight serve similar Vulnerability Assessment use cases: both are Vulnerability Assessment tools. Key differences: A-LIGN Vulnerability Assessment Service is Commercial while Semperis Purple Knight is Free. Review the feature comparison above to determine which fits your requirements.