# Guardz External Footprint vs s3viewer: side-by-side comparison (2026)

[Guardz External Footprint](https://cybersectools.com/tools/guardz-external-footprint) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Guardz](https://cybersectools.com/companies/guardz). [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

| | Guardz External Footprint | 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 | Guardz | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Guardz External Footprint | s3viewer |
|---|---|---|
| Dark Web Monitoring | Yes | – |
| DNS Security | Yes | – |
| SSL | Yes | – |
| TLS | Yes | – |
| Multi Tenancy | Yes | – |
| Azure | – | Yes |
| S3 | – | Yes |
| AWS | – | Yes |
| Misconfiguration | – | Yes |

### Core features

**Guardz External Footprint**

10 features listed. Sign in on the page to see them.

**s3viewer**

No features listed.

### Integrations

**Guardz External Footprint**

2 integrations listed. Sign in on the page to see them.

**s3viewer**

No integrations 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.

## Guardz External Footprint vs s3viewer FAQ

Common questions when comparing Guardz External Footprint vs s3viewer for external attack surface management.

### What is the difference between Guardz External Footprint and s3viewer?

**Guardz External Footprint**: External attack surface monitoring with dark web intelligence and scanning. Built by Guardz.

**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 Guardz External Footprint and s3viewer?

**Guardz External Footprint** is made by Guardz. **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 Guardz External Footprint a good alternative to s3viewer?

Often, yes. Guardz External Footprint and s3viewer are both External Attack Surface Management products. Key differences: Guardz External Footprint 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

- [Guardz External Footprint vs ThreatDefence Integrated ASM](https://cybersectools.com/compare/guardz-external-footprint-vs-threatdefence-integrated-asm)
- [Guardz External Footprint vs DNS Assistant](https://cybersectools.com/compare/dns-assistant-vs-guardz-external-footprint)
- [Guardz External Footprint vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-guardz-external-footprint)
- [s3viewer vs ThreatDefence Integrated ASM](https://cybersectools.com/compare/s3viewer-vs-threatdefence-integrated-asm)
- [s3viewer vs DNS Assistant](https://cybersectools.com/compare/dns-assistant-vs-s3viewer)
- [s3viewer vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-s3viewer)

## Alternatives to each

- [See all Guardz External Footprint alternatives](https://cybersectools.com/alternatives/guardz-external-footprint)
- [See all s3viewer alternatives](https://cybersectools.com/alternatives/s3viewer)

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Source: https://cybersectools.com/compare/guardz-external-footprint-vs-s3viewer

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/guardz-external-footprint.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Guardz External Footprint 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