# crt.guru vs Wappalyzer: 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). [Wappalyzer](https://cybersectools.com/tools/wappalyzer) 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 | Wappalyzer |
|---|---|---|
| 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 | Startup, SMB, Mid-Market, Enterprise |
| Company | Crt.guru | – |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | Wappalyzer |
|---|---|---|
| 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 | – |
| Reconnaissance | – | Yes |

### Core features

**crt.guru**

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

**Wappalyzer**

No features listed.

### Integrations

**crt.guru**

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

**Wappalyzer**

No integrations listed.

## Which one fits you

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

- [Wappalyzer](https://cybersectools.com/tools/wappalyzer) fits if you need a free product.

## crt.guru vs Wappalyzer FAQ

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

### What is the difference between crt.guru and Wappalyzer?

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

**Wappalyzer**: A technology lookup and lead generation tool that identifies the technology stack of any website and provides features for market research, competitor analysis, and data enrichment.

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

### Is crt.guru a good alternative to Wappalyzer?

Often, yes. crt.guru and Wappalyzer are both External Attack Surface Management products. Key differences: crt.guru is Commercial while Wappalyzer 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 SurfaceDiff](https://cybersectools.com/compare/crtguru-vs-surfacediff)
- [crt.guru vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/crtguru-vs-ddactic-attack-surface-discovery)
- [Wappalyzer vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-wappalyzer)
- [Wappalyzer vs SurfaceDiff](https://cybersectools.com/compare/surfacediff-vs-wappalyzer)
- [Wappalyzer vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-wappalyzer)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all Wappalyzer alternatives](https://cybersectools.com/alternatives/wappalyzer)

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Source: https://cybersectools.com/compare/crtguru-vs-wappalyzer

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 Wappalyzer: 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