# crt.guru vs Red Sift Radar: 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). [Red Sift Radar](https://cybersectools.com/tools/red-sift-red-sift-radar) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Red Sift](https://cybersectools.com/companies/red-sift). 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 | Red Sift Radar |
|---|---|---|
| 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 | Red Sift |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | Red Sift Radar |
|---|---|---|
| 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 | – |

### Core features

**crt.guru**

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

**Red Sift Radar**

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

### Integrations

**crt.guru**

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

**Red Sift Radar**

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.

## crt.guru vs Red Sift Radar FAQ

Common questions when comparing crt.guru vs Red Sift Radar for external attack surface management.

### What is the difference between crt.guru and Red Sift Radar?

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

**Red Sift Radar**: LLM-powered security platform for finding and fixing security gaps. Built by Red Sift.

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

### Who makes crt.guru and Red Sift Radar?

**crt.guru** is made by Crt.guru. **Red Sift Radar** is made by Red Sift. 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 Red Sift Radar?

Often, yes. crt.guru and Red Sift Radar are both External Attack Surface Management products. 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 v6Protect Trusted Third Party Security Service](https://cybersectools.com/compare/crtguru-vs-v6protect-trusted-third-party-security-service)
- [Red Sift Radar vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-red-sift-red-sift-radar)
- [Red Sift Radar vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-red-sift-red-sift-radar)
- [Red Sift Radar vs v6Protect Trusted Third Party Security Service](https://cybersectools.com/compare/red-sift-red-sift-radar-vs-v6protect-trusted-third-party-security-service)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all Red Sift Radar alternatives](https://cybersectools.com/alternatives/red-sift-red-sift-radar)

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Source: https://cybersectools.com/compare/crtguru-vs-red-sift-red-sift-radar

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 Red Sift Radar: 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