# CYSEC ARCA Trusted OS for Clouds vs Zama Protocol: side-by-side comparison (2026)

[CYSEC ARCA Trusted OS for Clouds](https://cybersectools.com/tools/cysec-arca-trusted-os-for-clouds) is a commercial [confidential computing](https://cybersectools.com/categories/confidential-computing) solution by [CYSEC](https://cybersectools.com/companies/cysec). [Zama Protocol](https://cybersectools.com/tools/zama-protocol) is a commercial [confidential computing](https://cybersectools.com/categories/confidential-computing) solution by [Zama](https://cybersectools.com/companies/zama). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | CYSEC ARCA Trusted OS for Clouds | Zama Protocol |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Confidential Computing | Confidential Computing |
| Verified | No | No |
| Deployment type | Hybrid | Cloud |
| Company size fit | Mid-Market, Enterprise | Enterprise, Mid-Market |
| Company | CYSEC | Zama |
| Headquarters | – | – |

### Use cases and capabilities

| | CYSEC ARCA Trusted OS for Clouds | Zama Protocol |
|---|---|---|
| Virtual Machine | Yes | – |
| Secure Boot | Yes | – |
| Hardware Security | Yes | – |
| Workload Security | Yes | – |
| Encryption | – | Yes |
| Open Source | – | Yes |

### Core features

**CYSEC ARCA Trusted OS for Clouds**

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

**Zama Protocol**

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

### Integrations

**CYSEC ARCA Trusted OS for Clouds**

6 integrations listed. Sign in on the page to see them.

**Zama Protocol**

6 integrations 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.

- [CYSEC ARCA Trusted OS for Clouds](https://cybersectools.com/tools/cysec-arca-trusted-os-for-clouds) fits if you need both cloud and on-premises options.
- [Zama Protocol](https://cybersectools.com/tools/zama-protocol) fits if you want a cloud product.

## CYSEC ARCA Trusted OS for Clouds vs Zama Protocol FAQ

Common questions when comparing CYSEC ARCA Trusted OS for Clouds vs Zama Protocol for confidential computing.

### What is the difference between CYSEC ARCA Trusted OS for Clouds and Zama Protocol?

**CYSEC ARCA Trusted OS for Clouds**: Hardened OS providing trusted execution environment for VMs in clouds, built by CYSEC.

**Zama Protocol**: Confidential blockchain protocol using FHE for encrypted smart contracts, built by Zama.

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

### Who makes CYSEC ARCA Trusted OS for Clouds and Zama Protocol?

**CYSEC ARCA Trusted OS for Clouds** is made by CYSEC. **Zama Protocol** is made by Zama. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CYSEC ARCA Trusted OS for Clouds a good alternative to Zama Protocol?

Often, yes. CYSEC ARCA Trusted OS for Clouds and Zama Protocol are both Confidential Computing products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [CYSEC ARCA Trusted OS for Clouds vs enclaive Buckypaper CVMs](https://cybersectools.com/compare/cysec-arca-trusted-os-for-clouds-vs-enclaive-buckypaper-cvms)
- [CYSEC ARCA Trusted OS for Clouds vs Fortaegis Silicon Platform](https://cybersectools.com/compare/cysec-arca-trusted-os-for-clouds-vs-fortaegis-silicon-platform)
- [CYSEC ARCA Trusted OS for Clouds vs Modelyo Sovereign Cloud](https://cybersectools.com/compare/cysec-arca-trusted-os-for-clouds-vs-modelyo-cloud)
- [Zama Protocol vs enclaive Buckypaper CVMs](https://cybersectools.com/compare/enclaive-buckypaper-cvms-vs-zama-protocol)
- [Zama Protocol vs Fortaegis Silicon Platform](https://cybersectools.com/compare/fortaegis-silicon-platform-vs-zama-protocol)
- [Zama Protocol vs Modelyo Sovereign Cloud](https://cybersectools.com/compare/modelyo-cloud-vs-zama-protocol)

## Alternatives to each

- [See all CYSEC ARCA Trusted OS for Clouds alternatives](https://cybersectools.com/alternatives/cysec-arca-trusted-os-for-clouds)
- [See all Zama Protocol alternatives](https://cybersectools.com/alternatives/zama-protocol)

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Source: https://cybersectools.com/compare/cysec-arca-trusted-os-for-clouds-vs-zama-protocol

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

More on CYSEC ARCA Trusted OS for Clouds and Zama Protocol: 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