# C3 vs MITRE Caldera™: 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. [MITRE Caldera™](https://cybersectools.com/tools/mitre-calderatm) is a free [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | C3 | MITRE Caldera™ |
|---|---|---|
| Pricing model | Free | Free |
| 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 | 6,816 |
| Last commit | Jan 2026 | Mar 2026 |

### Use cases and capabilities

| | C3 | MITRE Caldera™ |
|---|---|---|
| C2 | Yes | Yes |
| Red Team | Yes | Yes |
| MITRE ATT&CK | – | Yes |

## C3 vs MITRE Caldera™ FAQ

Common questions when comparing C3 vs MITRE Caldera™ for red-team & adversary emulation.

### What is the difference between C3 and MITRE Caldera™?

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

**MITRE Caldera™**: MITRE Caldera™ is an automated adversary emulation platform built on the MITRE ATT&CK framework that supports red team operations and incident response activities through a modular C2 server and plugin architecture.

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

### Who makes C3 and MITRE Caldera™?

**C3** is open-source with 1,735 GitHub stars. **MITRE Caldera™** is open-source with 6,816 GitHub stars. 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 MITRE Caldera™?

Often, yes. C3 and MITRE Caldera™ are both Red-Team & Adversary Emulation products, and both cover C2, Red Team. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

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

## Alternatives to each

- [See all C3 alternatives](https://cybersectools.com/alternatives/c3)
- [See all MITRE Caldera™ alternatives](https://cybersectools.com/alternatives/mitre-calderatm)

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Source: https://cybersectools.com/compare/c3-vs-mitre-calderatm

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 MITRE Caldera™: 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