# crt.guru vs GrayHatWarfare Buckets: side-by-side comparison (2026)

[crt.guru](https://cybersectools.com/tools/crtguru) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Crt.guru](https://cybersectools.com/companies/crtguru). [GrayHatWarfare Buckets](https://cybersectools.com/tools/grayhatwarfare-buckets) 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

| | crt.guru | GrayHatWarfare Buckets |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Crt.guru | – |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | GrayHatWarfare Buckets |
|---|---|---|
| TLS | Yes | – |
| SSL | Yes | – |
| PCI DSS | Yes | – |
| NIST | Yes | – |
| Security Scanning | Yes | – |
| Alerting | Yes | – |
| Security Compliance Training | Yes | – |
| Security Reporting | Yes | – |
| Vulnerability | Yes | – |
| REST API | Yes | – |
| AWS | – | Yes |

### Core features

**crt.guru**

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

**GrayHatWarfare Buckets**

No features listed.

### Integrations

**crt.guru**

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

**GrayHatWarfare Buckets**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [crt.guru](https://cybersectools.com/tools/crtguru) fits if you are a startup.
- [GrayHatWarfare Buckets](https://cybersectools.com/tools/grayhatwarfare-buckets) fits if you need a free product.

## crt.guru vs GrayHatWarfare Buckets FAQ

Common questions when comparing crt.guru vs GrayHatWarfare Buckets for external attack surface management.

### What is the difference between crt.guru and GrayHatWarfare Buckets?

**crt.guru**: External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports. Built by Crt.guru.

**GrayHatWarfare Buckets**: A search engine for open Amazon S3 buckets and their contents, allowing users to search for files using keywords, filename extensions, and full path.

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

### Is crt.guru a good alternative to GrayHatWarfare Buckets?

Often, yes. crt.guru and GrayHatWarfare Buckets are both External Attack Surface Management products. Key differences: crt.guru is Commercial while GrayHatWarfare Buckets is Free. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [crt.guru vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-crtguru)
- [crt.guru vs v6Protect Trusted Third Party Security Service](https://cybersectools.com/compare/crtguru-vs-v6protect-trusted-third-party-security-service)
- [crt.guru vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/crtguru-vs-ddactic-attack-surface-discovery)
- [GrayHatWarfare Buckets vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-grayhatwarfare-buckets)
- [GrayHatWarfare Buckets vs v6Protect Trusted Third Party Security Service](https://cybersectools.com/compare/grayhatwarfare-buckets-vs-v6protect-trusted-third-party-security-service)
- [GrayHatWarfare Buckets vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-grayhatwarfare-buckets)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all GrayHatWarfare Buckets alternatives](https://cybersectools.com/alternatives/grayhatwarfare-buckets)

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Source: https://cybersectools.com/compare/crtguru-vs-grayhatwarfare-buckets

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

More on crt.guru and GrayHatWarfare Buckets: 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