# GREYCORTEX Mendel vs Viettel VCS-NSM: side-by-side comparison (2026)

[GREYCORTEX Mendel](https://cybersectools.com/tools/greycortex-mendel) is a commercial [network detection and response](https://cybersectools.com/categories/ndr) solution by [GREYCORTEX](https://cybersectools.com/companies/greycortex). [Viettel VCS-NSM](https://cybersectools.com/tools/viettel-vcs-nsm) is a commercial [network detection and response](https://cybersectools.com/categories/ndr) solution by [Viettel Security](https://cybersectools.com/companies/viettel-security). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | GREYCORTEX Mendel | Viettel VCS-NSM |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Network Detection and Response | Network Detection and Response |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | GREYCORTEX | Viettel Security |
| Headquarters | – | – |

### Use cases and capabilities

| | GREYCORTEX Mendel | Viettel VCS-NSM |
|---|---|---|
| NDR | Yes | – |
| Network Monitoring | Yes | Yes |
| Anomaly Detection | Yes | Yes |
| IoT Security | Yes | – |
| SCADA | Yes | – |
| Flow Analysis | Yes | – |
| PCAP | Yes | Yes |
| Network Visibility | Yes | – |
| Critical Infrastructure | Yes | – |
| Threat Analysis | Yes | – |
| APT | – | Yes |

### Core features

**GREYCORTEX Mendel**

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

**Viettel VCS-NSM**

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

### Integrations

**GREYCORTEX Mendel**

No integrations listed.

**Viettel VCS-NSM**

1 integration 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.

- [GREYCORTEX Mendel](https://cybersectools.com/tools/greycortex-mendel) fits if you need both cloud and on-premises options.
- [Viettel VCS-NSM](https://cybersectools.com/tools/viettel-vcs-nsm) fits if you need to run it on your own servers.

## GREYCORTEX Mendel vs Viettel VCS-NSM FAQ

Common questions when comparing GREYCORTEX Mendel vs Viettel VCS-NSM for network detection and response.

### What is the difference between GREYCORTEX Mendel and Viettel VCS-NSM?

**GREYCORTEX Mendel**: Network detection and response platform for IT, IoT, and OT threat monitoring, built by GREYCORTEX.

**Viettel VCS-NSM**: Real-time network security monitoring for threat detection using DPI and sandbox, built by Viettel Security.

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

### Who makes GREYCORTEX Mendel and Viettel VCS-NSM?

**GREYCORTEX Mendel** is made by GREYCORTEX. **Viettel VCS-NSM** is made by Viettel Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is GREYCORTEX Mendel a good alternative to Viettel VCS-NSM?

Often, yes. GREYCORTEX Mendel and Viettel VCS-NSM are both Network Detection and Response products, and both cover PCAP, Anomaly Detection, Network Monitoring. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [GREYCORTEX Mendel vs Port0 Network Security](https://cybersectools.com/compare/greycortex-mendel-vs-port0-network-security)
- [GREYCORTEX Mendel vs Hypergraph AI](https://cybersectools.com/compare/greycortex-mendel-vs-hypergraph-ai)
- [GREYCORTEX Mendel vs Hyprfire Firebug](https://cybersectools.com/compare/greycortex-mendel-vs-hyprfire-firebug)
- [Viettel VCS-NSM vs Port0 Network Security](https://cybersectools.com/compare/port0-network-security-vs-viettel-vcs-nsm)
- [Viettel VCS-NSM vs Hypergraph AI](https://cybersectools.com/compare/hypergraph-ai-vs-viettel-vcs-nsm)
- [Viettel VCS-NSM vs Hyprfire Firebug](https://cybersectools.com/compare/hyprfire-firebug-vs-viettel-vcs-nsm)

## Alternatives to each

- [See all GREYCORTEX Mendel alternatives](https://cybersectools.com/alternatives/greycortex-mendel)
- [See all Viettel VCS-NSM alternatives](https://cybersectools.com/alternatives/viettel-vcs-nsm)

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Source: https://cybersectools.com/compare/greycortex-mendel-vs-viettel-vcs-nsm

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

More on GREYCORTEX Mendel and Viettel VCS-NSM: 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