# Greymatter.io vs NoPorts: side-by-side comparison (2026)

[Greymatter.io](https://cybersectools.com/tools/greymatterio) is a commercial [microsegmentation](https://cybersectools.com/categories/microsegmentation) solution by [Greymatter.io](https://cybersectools.com/companies/greymatterio). [NoPorts](https://cybersectools.com/tools/noports) is a commercial [zero trust network access](https://cybersectools.com/categories/ztna) solution by [Atsign](https://cybersectools.com/companies/atsign). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Greymatter.io | NoPorts |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Microsegmentation | Zero Trust Network Access |
| Verified | No | No |
| Deployment type | Hybrid | Cloud |
| Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Greymatter.io | Atsign |
| Headquarters | – | – |

### Use cases and capabilities

| | Greymatter.io | NoPorts |
|---|---|---|
| Zero Trust Architecture | Yes | Yes |
| ZTNA | Yes | Yes |
| Microsegmentation | Yes | Yes |
| Network Segmentation | Yes | – |
| Cloud Native | Yes | – |
| DevSecOps | Yes | – |
| Kubernetes | Yes | – |
| Observability | Yes | – |
| Agentic AI Security | Yes | – |
| Remote Access | – | Yes |
| Encryption | – | Yes |
| SSH | – | Yes |
| Authentication | – | Yes |
| Private Networks | – | Yes |
| Infrastructure | – | Yes |
| Network Protection | – | Yes |

### Core features

**Greymatter.io**

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

**NoPorts**

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

### Integrations

**Greymatter.io**

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

**NoPorts**

No integrations listed.

## Which one fits you

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

- [Greymatter.io](https://cybersectools.com/tools/greymatterio) fits if you need both cloud and on-premises options.
- [NoPorts](https://cybersectools.com/tools/noports) fits if you want a cloud product and you are a small business.

## Greymatter.io vs NoPorts FAQ

Common questions when comparing Greymatter.io vs NoPorts for microsegmentation.

### What is the difference between Greymatter.io and NoPorts?

**Greymatter.io**: Zero trust service mesh platform for apps, APIs, and AI across hybrid cloud. Built by Greymatter.io.

**NoPorts**: Zero-open-port remote access via cryptographic identity-first connectivity. Built by Atsign.

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

### Who makes Greymatter.io and NoPorts?

**Greymatter.io** is made by Greymatter.io. **NoPorts** is made by Atsign. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Greymatter.io a good alternative to NoPorts?

In part. Greymatter.io and NoPorts are not in the same category on CybersecTools. Both cover ZTNA, Zero Trust Architecture, Microsegmentation. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Greymatter.io vs Knocknoc](https://cybersectools.com/compare/greymatterio-vs-knocknoc)
- [Greymatter.io vs PRODIC Microsegmentación](https://cybersectools.com/compare/greymatterio-vs-prodic-microsegmentacion)
- [Greymatter.io vs Isovalent Cilium Mesh](https://cybersectools.com/compare/greymatterio-vs-isovalent-cilium-mesh)
- [NoPorts vs Knocknoc](https://cybersectools.com/compare/knocknoc-vs-noports)
- [NoPorts vs PRODIC Microsegmentación](https://cybersectools.com/compare/noports-vs-prodic-microsegmentacion)
- [NoPorts vs Isovalent Cilium Mesh](https://cybersectools.com/compare/isovalent-cilium-mesh-vs-noports)

## Alternatives to each

- [See all Greymatter.io alternatives](https://cybersectools.com/alternatives/greymatterio)
- [See all NoPorts alternatives](https://cybersectools.com/alternatives/noports)

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Source: https://cybersectools.com/compare/greymatterio-vs-noports

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

More on Greymatter.io and NoPorts: 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