# crt.guru vs TrustFour T4 - Detect: 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). [TrustFour T4 - Detect](https://cybersectools.com/tools/trustfour-t4-detect) is a commercial [cyber asset attack surface management](https://cybersectools.com/categories/caasm) solution by [TrustFour](https://cybersectools.com/companies/trustfour). 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 | TrustFour T4 - Detect |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | External Attack Surface Management | Cyber Asset Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Crt.guru | TrustFour |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | TrustFour T4 - Detect |
|---|---|---|
| TLS | Yes | Yes |
| SSL | Yes | – |
| PCI DSS | Yes | – |
| NIST | Yes | Yes |
| Security Scanning | Yes | – |
| Alerting | Yes | – |
| Security Compliance Training | Yes | – |
| Security Reporting | Yes | – |
| Vulnerability | Yes | – |
| REST API | Yes | – |
| Non-Human Identity | – | Yes |
| Workload Security | – | Yes |
| Quantum Safe | – | Yes |
| Lateral Movement | – | Yes |
| Network Scanning | – | Yes |
| Visibility | – | Yes |
| Attack Detection | – | Yes |
| Network Monitoring | – | Yes |

### Core features

**crt.guru**

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

**TrustFour T4 - Detect**

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

### Integrations

**crt.guru**

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

**TrustFour T4 - Detect**

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 or a small business.

## crt.guru vs TrustFour T4 - Detect FAQ

Common questions when comparing crt.guru vs TrustFour T4 - Detect for external attack surface management.

### What is the difference between crt.guru and TrustFour T4 - Detect?

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

**TrustFour T4 - Detect**: Workload attack surface visibility tool for TLS compliance & NHI assessment. Built by TrustFour.

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

### Who makes crt.guru and TrustFour T4 - Detect?

**crt.guru** is made by Crt.guru. **TrustFour T4 - Detect** is made by TrustFour. 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 TrustFour T4 - Detect?

In part. crt.guru and TrustFour T4 - Detect are not in the same category on CybersecTools. Both cover TLS, NIST. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [crt.guru vs SurfaceDiff](https://cybersectools.com/compare/crtguru-vs-surfacediff)
- [crt.guru vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-crtguru)
- [crt.guru vs Cylana EASM](https://cybersectools.com/compare/crtguru-vs-cylana-easm)
- [TrustFour T4 - Detect vs SurfaceDiff](https://cybersectools.com/compare/surfacediff-vs-trustfour-t4-detect)
- [TrustFour T4 - Detect vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-trustfour-t4-detect)
- [TrustFour T4 - Detect vs Cylana EASM](https://cybersectools.com/compare/cylana-easm-vs-trustfour-t4-detect)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all TrustFour T4 - Detect alternatives](https://cybersectools.com/alternatives/trustfour-t4-detect)

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Source: https://cybersectools.com/compare/crtguru-vs-trustfour-t4-detect

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 TrustFour T4 - Detect: 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