Subra vs Threat Surface - Attack Surface Management: Side-by-Side Comparison (2026)

Subra: A simple web-based interface for subdomain enumeration using the subfinder tool..

Threat Surface - Attack Surface Management: EASM platform for continuous discovery and risk assessment of external assets. Core capabilities include Continuous automated asset discovery, Shadow IT and forgotten subdomain detection, Unmanaged cloud resource identification..

Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.

Subra and Threat Surface - Attack Surface Management serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Subdomain Enumeration. Key differences: Subra is Free while Threat Surface - Attack Surface Management is Commercial, Subra is open-source. Review the feature comparison above to determine which fits your requirements.