# iCOUNTER CTOS vs ShadowServer: side-by-side comparison (2026)

[iCOUNTER CTOS](https://cybersectools.com/tools/icounter-ctos) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [iCOUNTER](https://cybersectools.com/companies/icounter). [ShadowServer](https://cybersectools.com/tools/shadowserver) is a free [threat intel platforms](https://cybersectools.com/categories/tip) solution. Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Threat Intelligence Platform Solutions for Business](https://cybersectools.com/shortlists/best-threat-intelligence-platforms) picks Recorded Future Threat Intelligence, Google Threat Intelligence, CrowdStrike Falcon Adversary Intelligence and 4 more.

## Side-by-side comparison

| | iCOUNTER CTOS | ShadowServer |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Threat Intel Platforms | Threat Intel Platforms |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | iCOUNTER | – |
| Headquarters | – | – |

### Use cases and capabilities

| | iCOUNTER CTOS | ShadowServer |
|---|---|---|
| Cyber Threat Intelligence | Yes | – |
| Third Party Security | Yes | – |
| APT | Yes | – |
| Threat Actors | Yes | – |
| IOC | Yes | – |
| Threat Analysis | Yes | – |
| Vulnerability Intelligence | Yes | – |
| Supply Chain Security | Yes | – |
| Threat Feed | Yes | Yes |
| DDoS | – | Yes |

### Core features

**iCOUNTER CTOS**

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

**ShadowServer**

No features listed.

### Integrations

**iCOUNTER CTOS**

1 integration listed. Sign in on the page to see them.

**ShadowServer**

No integrations listed.

## Which one fits you

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

- [ShadowServer](https://cybersectools.com/tools/shadowserver) fits if you are a startup or a small business and you need a free product.

## iCOUNTER CTOS vs ShadowServer FAQ

Common questions when comparing iCOUNTER CTOS vs ShadowServer for threat intel platforms.

### What is the difference between iCOUNTER CTOS and ShadowServer?

**iCOUNTER CTOS**: Threat intel & TPRM platform detecting adversary intent before exploitation, built by iCOUNTER.

**ShadowServer**: A nonprofit security organization that collects and shares threat data to make the Internet more secure.

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

### Is iCOUNTER CTOS a good alternative to ShadowServer?

Often, yes. iCOUNTER CTOS and ShadowServer are both Threat Intel Platforms products, and both cover Threat Feed. Key differences: iCOUNTER CTOS is Commercial while ShadowServer is Free. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [iCOUNTER CTOS vs Cypho](https://cybersectools.com/compare/cypho-vs-icounter-ctos)
- [iCOUNTER CTOS vs Loginsoft VuInerability Intelligence LOVI](https://cybersectools.com/compare/icounter-ctos-vs-lovi)
- [iCOUNTER CTOS vs Ninja Signal](https://cybersectools.com/compare/icounter-ctos-vs-ninja-signal)
- [ShadowServer vs Cypho](https://cybersectools.com/compare/cypho-vs-shadowserver)
- [ShadowServer vs Loginsoft VuInerability Intelligence LOVI](https://cybersectools.com/compare/lovi-vs-shadowserver)
- [ShadowServer vs Ninja Signal](https://cybersectools.com/compare/ninja-signal-vs-shadowserver)

## Alternatives to each

- [See all iCOUNTER CTOS alternatives](https://cybersectools.com/alternatives/icounter-ctos)
- [See all ShadowServer alternatives](https://cybersectools.com/alternatives/shadowserver)

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Source: https://cybersectools.com/compare/icounter-ctos-vs-shadowserver

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

More on iCOUNTER CTOS and ShadowServer: 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