# ImmuniWeb® Discovery vs Puredns: side-by-side comparison (2026)

[ImmuniWeb® Discovery](https://cybersectools.com/tools/immuniweb-discovery) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [ImmuniWeb](https://cybersectools.com/companies/immuniweb). [Puredns](https://cybersectools.com/tools/puredns) 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

| | ImmuniWeb® Discovery | Puredns |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 1,982 |
| Last commit | – | Nov 2024 |
| Company | ImmuniWeb | – |
| Headquarters | – | – |

### Use cases and capabilities

| | ImmuniWeb® Discovery | Puredns |
|---|---|---|
| Dark Web Monitoring | Yes | – |
| Security Research | – | Yes |

### Core features

**ImmuniWeb® Discovery**

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

**Puredns**

No features listed.

### Integrations

**ImmuniWeb® Discovery**

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

**Puredns**

No integrations listed.

## Which one fits you

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

- [ImmuniWeb® Discovery](https://cybersectools.com/tools/immuniweb-discovery) fits if you want a cloud product.
- [Puredns](https://cybersectools.com/tools/puredns) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.

## ImmuniWeb® Discovery vs Puredns FAQ

Common questions when comparing ImmuniWeb® Discovery vs Puredns for external attack surface management.

### What is the difference between ImmuniWeb® Discovery and Puredns?

**ImmuniWeb® Discovery**: ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web. Built by ImmuniWeb.

**Puredns**: A fast domain resolver and subdomain bruteforcing tool.

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

### Who makes ImmuniWeb® Discovery and Puredns?

**ImmuniWeb® Discovery** is made by ImmuniWeb. **Puredns** is open-source with 1,982 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is ImmuniWeb® Discovery a good alternative to Puredns?

Often, yes. ImmuniWeb® Discovery and Puredns are both External Attack Surface Management products. Key differences: ImmuniWeb® Discovery is Commercial while Puredns is Free, Puredns is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [ImmuniWeb® Discovery vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-outpost24-external-attack-surface-management)
- [ImmuniWeb® Discovery vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-immuniweb-discovery)
- [ImmuniWeb® Discovery vs QuimeraX External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-quimerax-external-attack-surface-management)
- [Puredns vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/outpost24-external-attack-surface-management-vs-puredns)
- [Puredns vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-puredns)
- [Puredns vs QuimeraX External Attack Surface Management](https://cybersectools.com/compare/puredns-vs-quimerax-external-attack-surface-management)

## Alternatives to each

- [See all ImmuniWeb® Discovery alternatives](https://cybersectools.com/alternatives/immuniweb-discovery)
- [See all Puredns alternatives](https://cybersectools.com/alternatives/puredns)

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Source: https://cybersectools.com/compare/immuniweb-discovery-vs-puredns

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

More on ImmuniWeb® Discovery and Puredns: 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