Cyber Exposure Manager vs s3viewer: Side-by-Side Comparison (2026)

Cyber Exposure Manager: Cyber Exposure Manager: continuous visibility and remediation for external risk. built by Galileo Security. Core capabilities include External Attack Surface Management (EASM), Continuous Threat Exposure Management (CTEM), Exposure Scoring & Posture Trends..

s3viewer: A storage exploration tool that provides unified access to view publicly accessible Amazon S3 buckets, Azure Blob storage, FTP servers, and HTTP directory listings..

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

Cyber Exposure Manager is developed by Galileo Security founded in 2025-01-01T00:00:00.000Z. s3viewer is open-source with 448 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Cyber Exposure Manager and s3viewer serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Misconfiguration. Key differences: Cyber Exposure Manager is Commercial while s3viewer is Free, s3viewer is open-source. Review the feature comparison above to determine which fits your requirements.