# Edgescan Attack Surface Management (ASM) vs s3viewer: side-by-side comparison (2026) [Edgescan Attack Surface Management (ASM)](https://cybersectools.com/tools/edgescan-attack-surface-management-asm) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Edgescan](https://cybersectools.com/companies/edgescan). [s3viewer](https://cybersectools.com/tools/s3viewer) is a free [external attack surface management](https://cybersectools.com/categories/external-asm) solution. Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more. ## Side-by-side comparison | | Edgescan Attack Surface Management (ASM) | s3viewer | |---|---|---| | Pricing model | Commercial | Free | | Category | External Attack Surface Management | External Attack Surface Management | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | GitHub stars | – | 448 | | Last commit | – | Jul 2023 | | Company | Edgescan | – | | Headquarters | – | – | ### Use cases and capabilities | | Edgescan Attack Surface Management (ASM) | s3viewer | |---|---|---| | DNS Security | Yes | – | | Misconfiguration | Yes | Yes | | Azure | – | Yes | | S3 | – | Yes | | AWS | – | Yes | ### Core features **Edgescan Attack Surface Management (ASM)** 10 features listed. Sign in on the page to see them. **s3viewer** No features listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [s3viewer](https://cybersectools.com/tools/s3viewer) fits if you need a free product and you want an open-source product. ## Edgescan Attack Surface Management (ASM) vs s3viewer FAQ Common questions when comparing Edgescan Attack Surface Management (ASM) vs s3viewer for external attack surface management. ### What is the difference between Edgescan Attack Surface Management (ASM) and s3viewer? **Edgescan Attack Surface Management (ASM)**: External attack surface management platform for asset discovery and monitoring. Built by Edgescan. **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. ### Who makes Edgescan Attack Surface Management (ASM) and s3viewer? **Edgescan Attack Surface Management (ASM)** is made by Edgescan. **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. ### Is Edgescan Attack Surface Management (ASM) a good alternative to s3viewer? Often, yes. Edgescan Attack Surface Management (ASM) and s3viewer are both External Attack Surface Management products, and both cover Misconfiguration. Key differences: Edgescan Attack Surface Management (ASM) is Commercial while s3viewer is Free, s3viewer is open-source. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Edgescan Attack Surface Management (ASM) vs Intruder Attack Surface Management](https://cybersectools.com/compare/edgescan-attack-surface-management-asm-vs-intruder-attack-surface-management) - [Edgescan Attack Surface Management (ASM) vs Detectify Surface Monitoring](https://cybersectools.com/compare/detectify-surface-monitoring-vs-edgescan-attack-surface-management-asm) - [Edgescan Attack Surface Management (ASM) vs ThreatDefence Integrated ASM](https://cybersectools.com/compare/edgescan-attack-surface-management-asm-vs-threatdefence-integrated-asm) - [s3viewer vs Intruder Attack Surface Management](https://cybersectools.com/compare/intruder-attack-surface-management-vs-s3viewer) - [s3viewer vs Detectify Surface Monitoring](https://cybersectools.com/compare/detectify-surface-monitoring-vs-s3viewer) - [s3viewer vs ThreatDefence Integrated ASM](https://cybersectools.com/compare/s3viewer-vs-threatdefence-integrated-asm) ## Alternatives to each - [See all Edgescan Attack Surface Management (ASM) alternatives](https://cybersectools.com/alternatives/edgescan-attack-surface-management-asm) - [See all s3viewer alternatives](https://cybersectools.com/alternatives/s3viewer) --- Source: https://cybersectools.com/compare/edgescan-attack-surface-management-asm-vs-s3viewer For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/edgescan-attack-surface-management-asm.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Edgescan Attack Surface Management (ASM) and s3viewer: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md