# Cobalt Strike's ExternalC2 framework vs Covenant: side-by-side comparison (2026)

[Cobalt Strike's ExternalC2 framework](https://cybersectools.com/tools/cobalt-strikes-externalc2-framework) is a free [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution. [Covenant](https://cybersectools.com/tools/covenant) 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

| | Cobalt Strike's ExternalC2 framework | Covenant |
|---|---|---|
| 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 | Enterprise | Mid-Market, Enterprise |
| GitHub stars | – | 4,641 |
| Last commit | – | Apr 2021 |

### Use cases and capabilities

| | Cobalt Strike's ExternalC2 framework | Covenant |
|---|---|---|
| C2 | Yes | Yes |
| Red Team | – | Yes |
| .NET | – | Yes |
| Payload Generation | – | Yes |

## Which one fits you

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

- [Covenant](https://cybersectools.com/tools/covenant) fits if you are a mid-market company and you want an open-source product.

## Cobalt Strike's ExternalC2 framework vs Covenant FAQ

Common questions when comparing Cobalt Strike's ExternalC2 framework vs Covenant for red-team & adversary emulation.

### What is the difference between Cobalt Strike's ExternalC2 framework and Covenant?

**Cobalt Strike's ExternalC2 framework**: A specification/framework for extending default C2 communication channels in Cobalt Strike.

**Covenant**: Covenant is a collaborative .NET command and control framework designed for red team operations and offensive security engagements.

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

### Is Cobalt Strike's ExternalC2 framework a good alternative to Covenant?

Often, yes. Cobalt Strike's ExternalC2 framework and Covenant are both Red-Team & Adversary Emulation products, and both cover C2. Key differences: Covenant is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Cobalt Strike's ExternalC2 framework vs Core Security Outflank Security Tooling](https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-core-security-outflank-security-tooling)
- [Cobalt Strike's ExternalC2 framework vs Fortra Cobalt Strike](https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-fortra-cobalt-strike)
- [Cobalt Strike's ExternalC2 framework vs Core Security Cobalt Strike](https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-core-security-cobalt-strike)
- [Covenant vs Core Security Outflank Security Tooling](https://cybersectools.com/compare/core-security-outflank-security-tooling-vs-covenant)
- [Covenant vs Fortra Cobalt Strike](https://cybersectools.com/compare/covenant-vs-fortra-cobalt-strike)
- [Covenant vs Core Security Cobalt Strike](https://cybersectools.com/compare/core-security-cobalt-strike-vs-covenant)

## Alternatives to each

- [See all Cobalt Strike's ExternalC2 framework alternatives](https://cybersectools.com/alternatives/cobalt-strikes-externalc2-framework)
- [See all Covenant alternatives](https://cybersectools.com/alternatives/covenant)

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Source: https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-covenant

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/cobalt-strikes-externalc2-framework.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Cobalt Strike's ExternalC2 framework and Covenant: 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