# FourCore ATTACK vs Metta: side-by-side comparison (2026)

[FourCore ATTACK](https://cybersectools.com/tools/fourcore-attack) is a commercial [breach & attack simulation](https://cybersectools.com/categories/threat-simulation) solution by [FourCore](https://cybersectools.com/companies/fourcore). [Metta](https://cybersectools.com/tools/metta) is a free [breach & attack simulation](https://cybersectools.com/categories/threat-simulation) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | FourCore ATTACK | Metta |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Breach & Attack Simulation | Breach & Attack Simulation |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| GitHub stars | – | 1,133 |
| Last commit | – | Jun 2018 |
| Company | FourCore | – |
| Headquarters | – | – |

### Use cases and capabilities

| | FourCore ATTACK | Metta |
|---|---|---|
| Security Validation | Yes | – |
| Attack Paths | Yes | – |
| MITRE ATT&CK | Yes | – |
| Red Team | Yes | Yes |

## Which one fits you

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

- [FourCore ATTACK](https://cybersectools.com/tools/fourcore-attack) fits if you want a cloud product.
- [Metta](https://cybersectools.com/tools/metta) fits if you need to run it on your own servers, you need a free product and you want an open-source product.

## FourCore ATTACK vs Metta FAQ

Common questions when comparing FourCore ATTACK vs Metta for breach & attack simulation.

### What is the difference between FourCore ATTACK and Metta?

**FourCore ATTACK**: FourCore ATTACK is an adversary emulation platform to manage cyber risk with evidence, built by FourCore.

**Metta**: Metta is an information security preparedness tool for adversarial simulation.

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

### Who makes FourCore ATTACK and Metta?

**FourCore ATTACK** is made by FourCore. **Metta** is open-source with 1,133 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is FourCore ATTACK a good alternative to Metta?

Often, yes. FourCore ATTACK and Metta are both Breach & Attack Simulation products, and both cover Red Team. Key differences: FourCore ATTACK is Commercial while Metta is Free, Metta is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [FourCore ATTACK vs SafeBreach Exposure Validation Platform](https://cybersectools.com/compare/fourcore-attack-vs-safebreach-exposure-validation-platform)
- [FourCore ATTACK vs NetSPI Detective Controls Testing](https://cybersectools.com/compare/fourcore-attack-vs-netspi-detective-controls-testing)
- [FourCore ATTACK vs Cybral STORM ATTACKER](https://cybersectools.com/compare/cybral-storm-attacker-vs-fourcore-attack)
- [Metta vs SafeBreach Exposure Validation Platform](https://cybersectools.com/compare/metta-vs-safebreach-exposure-validation-platform)
- [Metta vs NetSPI Detective Controls Testing](https://cybersectools.com/compare/metta-vs-netspi-detective-controls-testing)
- [Metta vs Cybral STORM ATTACKER](https://cybersectools.com/compare/cybral-storm-attacker-vs-metta)

## Alternatives to each

- [See all FourCore ATTACK alternatives](https://cybersectools.com/alternatives/fourcore-attack)
- [See all Metta alternatives](https://cybersectools.com/alternatives/metta)

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Source: https://cybersectools.com/compare/fourcore-attack-vs-metta

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

More on FourCore ATTACK and Metta: 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