# crt.guru vs DDactic Attack Surface Discovery: 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). [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [DDactic](https://cybersectools.com/companies/ddactic). 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, Google Mandiant Attack Surface Management and 4 more.

## Side-by-side comparison

| | crt.guru | DDactic Attack Surface Discovery |
|---|---|---|
| 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 | Startup, SMB, Mid-Market, Enterprise |
| Company | Crt.guru | DDactic |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | DDactic Attack Surface Discovery |
|---|---|---|
| TLS | Yes | – |
| SSL | Yes | Yes |
| PCI DSS | Yes | – |
| NIST | Yes | – |
| Security Scanning | Yes | Yes |
| Alerting | Yes | – |
| Security Compliance Training | Yes | – |
| Security Reporting | Yes | – |
| Vulnerability | Yes | Yes |
| REST API | Yes | – |
| Subdomain Enumeration | – | Yes |
| DDoS | – | Yes |
| DNS Security | – | Yes |
| Network Scanning | – | Yes |
| Port Scanning | – | Yes |
| Data Breach | – | Yes |
| Reconnaissance | – | Yes |

### Core features

**crt.guru**

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

**DDactic Attack Surface Discovery**

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.

**DDactic Attack Surface Discovery**

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

## crt.guru vs DDactic Attack Surface Discovery FAQ

Common questions when comparing crt.guru vs DDactic Attack Surface Discovery for external attack surface management.

### What is the difference between crt.guru and DDactic Attack Surface Discovery?

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

**DDactic Attack Surface Discovery**: Scans domains to discover attack surface, vulnerabilities, and generate hardening, built by DDactic.

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

### Who makes crt.guru and DDactic Attack Surface Discovery?

**crt.guru** is made by Crt.guru. **DDactic Attack Surface Discovery** is made by DDactic founded in 2026-01-01T00:00:00.000Z. 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 DDactic Attack Surface Discovery?

Often, yes. crt.guru and DDactic Attack Surface Discovery are both External Attack Surface Management products, and both cover Vulnerability, Security Scanning, SSL. 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 ctlogs.dev](https://cybersectools.com/compare/crtguru-vs-ctlogsdev)
- [DDactic Attack Surface Discovery vs SurfaceDiff](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-surfacediff)
- [DDactic Attack Surface Discovery vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-ddactic-attack-surface-discovery)
- [DDactic Attack Surface Discovery vs ctlogs.dev](https://cybersectools.com/compare/ctlogsdev-vs-ddactic-attack-surface-discovery)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all DDactic Attack Surface Discovery alternatives](https://cybersectools.com/alternatives/ddactic-attack-surface-discovery)

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Source: https://cybersectools.com/compare/crtguru-vs-ddactic-attack-surface-discovery

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 DDactic Attack Surface Discovery: 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