# dref vs RunSybil: side-by-side comparison (2026)

[dref](https://cybersectools.com/tools/dref) is a free [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution. [RunSybil](https://cybersectools.com/tools/runsybil) is a commercial [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution by [RunSybil](https://cybersectools.com/companies/runsybil). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | dref | RunSybil |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Red-Team & Adversary Emulation | Penetration Testing |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | 492 | – |
| Last commit | Apr 2021 | – |
| Company | – | RunSybil |
| Headquarters | – | – |

### Use cases and capabilities

| | dref | RunSybil |
|---|---|---|
| Security Research | Yes | – |
| DNS Rebinding | Yes | – |
| AI Pentesting | – | Yes |
| Attack Paths | – | Yes |
| Continuous Testing | – | Yes |
| Vulnerability Prioritization | – | Yes |
| Reconnaissance | – | Yes |
| DAST | – | Yes |
| Red Team | – | Yes |
| Security Scanning | – | Yes |
| Vulnerability | – | Yes |
| Cloud Native | – | Yes |

### Core features

**dref**

No features listed.

**RunSybil**

10 features 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.

- [dref](https://cybersectools.com/tools/dref) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
- [RunSybil](https://cybersectools.com/tools/runsybil) fits if you want a cloud product.

## dref vs RunSybil FAQ

Common questions when comparing dref vs RunSybil for red-team & adversary emulation.

### What is the difference between dref and RunSybil?

**dref**: A DNS rebinding exploitation framework.

**RunSybil**: AI-driven continuous attack surface assessment and validation platform. Built by RunSybil.

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

### Who makes dref and RunSybil?

**dref** is open-source with 492 GitHub stars. **RunSybil** is made by RunSybil. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is dref a good alternative to RunSybil?

In part. dref and RunSybil are not in the same category on CybersecTools. Key differences: dref is Free while RunSybil is Commercial, dref is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [dref vs A Security](https://cybersectools.com/compare/a-security-vs-dref)
- [dref vs Ethiack](https://cybersectools.com/compare/dref-vs-ethiack)
- [dref vs Red Specter Cheatsheet](https://cybersectools.com/compare/dref-vs-red-specter-cheatsheet)
- [RunSybil vs A Security](https://cybersectools.com/compare/a-security-vs-runsybil)
- [RunSybil vs Ethiack](https://cybersectools.com/compare/ethiack-vs-runsybil)
- [RunSybil vs Red Specter Cheatsheet](https://cybersectools.com/compare/red-specter-cheatsheet-vs-runsybil)

## Alternatives to each

- [See all dref alternatives](https://cybersectools.com/alternatives/dref)
- [See all RunSybil alternatives](https://cybersectools.com/alternatives/runsybil)

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Source: https://cybersectools.com/compare/dref-vs-runsybil

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

More on dref and RunSybil: 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