Attack Surface Scan vs s3viewer: side-by-side comparison (2026)

Attack Surface Scan: Agentless external attack surface monitoring with continuous change detection. Built by Attack Surface Scan.

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.

The table above shows where their features, integrations, deployment and company size fit differ.

Attack Surface Scan is made by Attack Surface Scan. s3viewer is open-source with 448 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Attack Surface Scan and s3viewer are both External Attack Surface Management products. Key differences: Attack Surface Scan is Commercial while s3viewer is Free, s3viewer is open-source. Use the table above to see where features, deployment and company size fit differ.