# NodeZero vs ysoserial.net: side-by-side comparison (2026)

[NodeZero](https://cybersectools.com/tools/nodezero) is a commercial [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution by [Horizon3.ai](https://cybersectools.com/companies/horizon3ai). [ysoserial.net](https://cybersectools.com/tools/ysoserialnet) is a free [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | NodeZero | ysoserial.net |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Penetration Testing | Penetration Testing |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| GitHub stars | – | 3,544 |
| Last commit | – | Dec 2024 |
| Company | Horizon3.ai | – |
| Headquarters | – | – |

### Use cases and capabilities

| | NodeZero | ysoserial.net |
|---|---|---|
| Active Directory | Yes | – |
| Attack Paths | Yes | – |
| Kubernetes | Yes | – |
| AI Pentesting | Yes | – |
| .NET | – | Yes |
| Payload Generation | – | Yes |

### Core features

**NodeZero**

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

**ysoserial.net**

No features listed.

## Which one fits you

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

- [NodeZero](https://cybersectools.com/tools/nodezero) fits if you want a cloud product.
- [ysoserial.net](https://cybersectools.com/tools/ysoserialnet) fits if you need to run it on your own servers, you need a free product and you want an open-source product.

## NodeZero vs ysoserial.net FAQ

Common questions when comparing NodeZero vs ysoserial.net for penetration testing.

### What is the difference between NodeZero and ysoserial.net?

**NodeZero**: Autonomous pentesting platform for internal, external, cloud & K8s testing. Built by Horizon3.ai.

**ysoserial.net**: A payload generator that creates malicious deserialization payloads for testing .NET applications against insecure deserialization vulnerabilities.

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

### Who makes NodeZero and ysoserial.net?

**NodeZero** is made by Horizon3.ai. **ysoserial.net** is open-source with 3,544 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is NodeZero a good alternative to ysoserial.net?

Often, yes. NodeZero and ysoserial.net are both Penetration Testing products. Key differences: NodeZero is Commercial while ysoserial.net is Free, ysoserial.net is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [NodeZero vs Ironwood Cyber Enlight](https://cybersectools.com/compare/ironwood-cyber-enlight-vs-nodezero)
- [NodeZero vs Tolmo](https://cybersectools.com/compare/nodezero-vs-tolmo)
- [NodeZero vs AI Pentest Copilot](https://cybersectools.com/compare/ai-pentest-copilot-vs-nodezero)
- [ysoserial.net vs Ironwood Cyber Enlight](https://cybersectools.com/compare/ironwood-cyber-enlight-vs-ysoserialnet)
- [ysoserial.net vs Tolmo](https://cybersectools.com/compare/tolmo-vs-ysoserialnet)
- [ysoserial.net vs AI Pentest Copilot](https://cybersectools.com/compare/ai-pentest-copilot-vs-ysoserialnet)

## Alternatives to each

- [See all NodeZero alternatives](https://cybersectools.com/alternatives/nodezero)
- [See all ysoserial.net alternatives](https://cybersectools.com/alternatives/ysoserialnet)

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Source: https://cybersectools.com/compare/nodezero-vs-ysoserialnet

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

More on NodeZero and ysoserial.net: 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