# crt.guru vs Siemba EASM: 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). [Siemba EASM](https://cybersectools.com/tools/siemba-easm) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Siemba](https://cybersectools.com/companies/siemba). 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 | Siemba EASM |
|---|---|---|
| Pricing model | Commercial | Commercial |
| 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 | Siemba |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | Siemba EASM |
|---|---|---|
| TLS | Yes | 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 | – |
| Misconfiguration | – | Yes |

### Core features

**crt.guru**

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

**Siemba EASM**

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

### Integrations

**crt.guru**

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

**Siemba EASM**

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

## 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.

## crt.guru vs Siemba EASM FAQ

Common questions when comparing crt.guru vs Siemba EASM for external attack surface management.

### What is the difference between crt.guru and Siemba EASM?

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

**Siemba EASM**: AI-driven EASM platform for discovering and monitoring external-facing assets. Built by Siemba.

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

### Who makes crt.guru and Siemba EASM?

**crt.guru** is made by Crt.guru. **Siemba EASM** is made by Siemba. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is crt.guru a good alternative to Siemba EASM?

Often, yes. crt.guru and Siemba EASM are both External Attack Surface Management products, and both cover TLS. 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 DDactic Attack Surface Discovery](https://cybersectools.com/compare/crtguru-vs-ddactic-attack-surface-discovery)
- [crt.guru vs DNS Assistant](https://cybersectools.com/compare/crtguru-vs-dns-assistant)
- [Siemba EASM vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-siemba-easm)
- [Siemba EASM vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-siemba-easm)
- [Siemba EASM vs DNS Assistant](https://cybersectools.com/compare/dns-assistant-vs-siemba-easm)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all Siemba EASM alternatives](https://cybersectools.com/alternatives/siemba-easm)

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Source: https://cybersectools.com/compare/crtguru-vs-siemba-easm

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 Siemba EASM: 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