# C3 vs Crimson7 Offensive Engineering: side-by-side comparison (2026)

[C3](https://cybersectools.com/tools/c3) is a free [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution. [Crimson7 Offensive Engineering](https://cybersectools.com/tools/crimson7-offensive-engineering) is a commercial [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution by [Crimson7](https://cybersectools.com/companies/crimson7). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | C3 | Crimson7 Offensive Engineering |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Red-Team & Adversary Emulation | Red-Team & Adversary Emulation |
| Verified | No | No |
| Deployment type | On-Premises | On-Premises |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| GitHub stars | 1,735 | – |
| Last commit | Jan 2026 | – |
| Company | – | Crimson7 |
| Headquarters | – | – |

### Use cases and capabilities

| | C3 | Crimson7 Offensive Engineering |
|---|---|---|
| C2 | Yes | – |
| Red Team | Yes | Yes |
| Penetration Testing Framework | – | Yes |
| MITRE ATT&CK | – | Yes |
| Active Directory | – | Yes |
| Lateral Movement | – | Yes |
| Privilege Escalation | – | Yes |
| Detection Rules | – | Yes |
| Threat Actors | – | Yes |
| Physical Security | – | Yes |
| Tabletop Exercises | – | Yes |

### Core features

**C3**

No features listed.

**Crimson7 Offensive Engineering**

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

### Integrations

**C3**

No integrations listed.

**Crimson7 Offensive Engineering**

3 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.

- [C3](https://cybersectools.com/tools/c3) fits if you need a free product and you want an open-source product.

## C3 vs Crimson7 Offensive Engineering FAQ

Common questions when comparing C3 vs Crimson7 Offensive Engineering for red-team & adversary emulation.

### What is the difference between C3 and Crimson7 Offensive Engineering?

**C3**: C3 is a framework by WithSecureLabs for rapid prototyping of custom command and control channels that integrates with existing offensive security toolkits.

**Crimson7 Offensive Engineering**: Red/purple team and identity security assessment service simulating real adversary attacks. Built by Crimson7.

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

### Who makes C3 and Crimson7 Offensive Engineering?

**C3** is open-source with 1,735 GitHub stars. **Crimson7 Offensive Engineering** is made by Crimson7. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is C3 a good alternative to Crimson7 Offensive Engineering?

Often, yes. C3 and Crimson7 Offensive Engineering are both Red-Team & Adversary Emulation products, and both cover Red Team. Key differences: C3 is Free while Crimson7 Offensive Engineering is Commercial, C3 is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [C3 vs A Security](https://cybersectools.com/compare/a-security-vs-c3)
- [C3 vs GoSecure Titan® Adversarial Simulation](https://cybersectools.com/compare/c3-vs-gosecure-titanr-adversarial-simulation)
- [C3 vs Fortra Cobalt Strike](https://cybersectools.com/compare/c3-vs-fortra-cobalt-strike)
- [Crimson7 Offensive Engineering vs A Security](https://cybersectools.com/compare/a-security-vs-crimson7-offensive-engineering)
- [Crimson7 Offensive Engineering vs GoSecure Titan® Adversarial Simulation](https://cybersectools.com/compare/crimson7-offensive-engineering-vs-gosecure-titanr-adversarial-simulation)
- [Crimson7 Offensive Engineering vs Fortra Cobalt Strike](https://cybersectools.com/compare/crimson7-offensive-engineering-vs-fortra-cobalt-strike)

## Alternatives to each

- [See all C3 alternatives](https://cybersectools.com/alternatives/c3)
- [See all Crimson7 Offensive Engineering alternatives](https://cybersectools.com/alternatives/crimson7-offensive-engineering)

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Source: https://cybersectools.com/compare/c3-vs-crimson7-offensive-engineering

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/c3.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on C3 and Crimson7 Offensive Engineering: 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