# ctlogs.dev vs Zerofox External Attack Surface Management: side-by-side comparison (2026)

[ctlogs.dev](https://cybersectools.com/tools/ctlogsdev) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Apps34](https://cybersectools.com/companies/apps34). [Zerofox External Attack Surface Management](https://cybersectools.com/tools/zerofox-external-attack-surface-management) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [ZeroFox](https://cybersectools.com/companies/zerofox). Features, integrations, deployment and the company behind each one, side by side.

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## Side-by-side comparison

| | ctlogs.dev | Zerofox External Attack Surface Management |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | Verified | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup | SMB, Mid-Market, Enterprise |
| Company | Apps34 | ZeroFox |
| Headquarters | – | – |

### Use cases and capabilities

| | ctlogs.dev | Zerofox External Attack Surface Management |
|---|---|---|
| Reconnaissance | Yes | – |
| OSINT | Yes | – |
| SSL | Yes | – |
| TLS | Yes | – |
| REST API | Yes | – |
| Cyber Threat Intelligence | Yes | – |
| DNS Security | Yes | – |
| Attack Detection | Yes | – |
| Subdomain Enumeration | Yes | – |
| Dark Web Monitoring | – | Yes |

### Core features

**ctlogs.dev**

- Real-time Certificate Transparency Search
- Automated Subdomain Enumeration
- High-Performance REST JSON API
- Wildcard & Fingerprint Matching
- SSL/TLS Certificate History Tracking
- Attack Surface Mapping
- Historical Log Archiving
- Instant Domain & Issuer Filtering

**Zerofox External Attack Surface Management**

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

### Integrations

**ctlogs.dev**

- REST API
- cURL
- Python
- JSON
- Webhooks
- SIEM

**Zerofox External Attack Surface Management**

42 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.

- [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev) fits if you are a startup.
- [Zerofox External Attack Surface Management](https://cybersectools.com/tools/zerofox-external-attack-surface-management) fits if you are a small business or a mid-market company or an enterprise.

## ctlogs.dev vs Zerofox External Attack Surface Management FAQ

Common questions when comparing ctlogs.dev vs Zerofox External Attack Surface Management for external attack surface management.

### What is the difference between ctlogs.dev and Zerofox External Attack Surface Management?

**ctlogs.dev**: Fast Certificate Transparency search and JSON API for subdomain reconnaissance. Built by Apps34. Core capabilities include Real-time Certificate Transparency Search, Automated Subdomain Enumeration, High-Performance REST JSON API.

**Zerofox External Attack Surface Management**: Discovers and manages internet-facing assets with vulnerability prioritization. Built by ZeroFox.

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

### Who makes ctlogs.dev and Zerofox External Attack Surface Management?

**ctlogs.dev** is made by Apps34. **Zerofox External Attack Surface Management** is made by ZeroFox. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is ctlogs.dev a good alternative to Zerofox External Attack Surface Management?

Often, yes. ctlogs.dev and Zerofox External Attack Surface Management are both External Attack Surface Management products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [ctlogs.dev vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ctlogsdev-vs-ddactic-attack-surface-discovery)
- [ctlogs.dev vs TRaViS](https://cybersectools.com/compare/ctlogsdev-vs-travis)
- [ctlogs.dev vs GuardEon](https://cybersectools.com/compare/ctlogsdev-vs-guardeon)
- [Zerofox External Attack Surface Management vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-zerofox-external-attack-surface-management)
- [Zerofox External Attack Surface Management vs TRaViS](https://cybersectools.com/compare/travis-vs-zerofox-external-attack-surface-management)
- [Zerofox External Attack Surface Management vs GuardEon](https://cybersectools.com/compare/guardeon-vs-zerofox-external-attack-surface-management)

## Alternatives to each

- [See all ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev)
- [See all Zerofox External Attack Surface Management alternatives](https://cybersectools.com/alternatives/zerofox-external-attack-surface-management)

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Source: https://cybersectools.com/compare/ctlogsdev-vs-zerofox-external-attack-surface-management

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/ctlogsdev.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on ctlogs.dev and Zerofox External Attack Surface Management: 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