# Diligent One Platform vs MetricStream GRC Platform: side-by-side comparison (2026)

[Diligent One Platform](https://cybersectools.com/tools/diligent-ai) is a commercial [governance risk and compliance platforms](https://cybersectools.com/categories/grc-platforms) solution by [Diligent Corporation](https://cybersectools.com/companies/diligent-corporation). [MetricStream GRC Platform](https://cybersectools.com/tools/metricstream-ai-first-connected-grc) is a commercial [governance risk and compliance platforms](https://cybersectools.com/categories/grc-platforms) solution by [MetricStream](https://cybersectools.com/companies/metricstream). Features, integrations, deployment and the company behind each one, side by side.

## Our take

What our shortlists say about the one we picked.

### [MetricStream GRC Platform](https://cybersectools.com/tools/metricstream-ai-first-connected-grc)

Best for: Larger firms with broad risk, audit and resilience programs

We did not find enough recent first-hand reviews of this product to summarize what customers say.

From [Best GRC Solutions for Business](https://cybersectools.com/shortlists/best-grc-solutions), Fall 2026.

Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about).

## Side-by-side comparison

| | Diligent One Platform | MetricStream GRC Platform |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Governance Risk and Compliance Platforms | Governance Risk and Compliance Platforms |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Diligent Corporation | MetricStream |
| Headquarters | – | – |

### Use cases and capabilities

| | Diligent One Platform | MetricStream GRC Platform |
|---|---|---|
| Security Audit | Yes | Yes |

### Core features

**Diligent One Platform**

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

**MetricStream GRC Platform**

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

### Integrations

**Diligent One Platform**

No integrations listed.

**MetricStream GRC Platform**

11 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.

- [Diligent One Platform](https://cybersectools.com/tools/diligent-ai) fits if you are a small business.

## Diligent One Platform vs MetricStream GRC Platform FAQ

Common questions when comparing Diligent One Platform vs MetricStream GRC Platform for governance risk and compliance platforms.

### What is the difference between Diligent One Platform and MetricStream GRC Platform?

**Diligent One Platform**: AI-powered GRC platform for governance, risk, compliance, and audit management. Built by Diligent Corporation.

**MetricStream GRC Platform**: AI-driven GRC platform for risk, compliance, audit, cyber, and resilience mgmt. Built by MetricStream.

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

### Who makes Diligent One Platform and MetricStream GRC Platform?

**Diligent One Platform** is made by Diligent Corporation. **MetricStream GRC Platform** is made by MetricStream. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Diligent One Platform a good alternative to MetricStream GRC Platform?

Often, yes. Diligent One Platform and MetricStream GRC Platform are both Governance Risk and Compliance Platforms products, and both cover Security Audit. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Diligent One Platform vs FortifyData Cyber GRC](https://cybersectools.com/compare/diligent-ai-vs-fortifydata-cyber-grc)
- [Diligent One Platform vs Quantivate GRC Software Platform](https://cybersectools.com/compare/diligent-ai-vs-quantivate-grc-software-platform)
- [Diligent One Platform vs IBM OpenPages](https://cybersectools.com/compare/diligent-ai-vs-ibm-openpages)
- [MetricStream GRC Platform vs FortifyData Cyber GRC](https://cybersectools.com/compare/fortifydata-cyber-grc-vs-metricstream-ai-first-connected-grc)
- [MetricStream GRC Platform vs Quantivate GRC Software Platform](https://cybersectools.com/compare/metricstream-ai-first-connected-grc-vs-quantivate-grc-software-platform)
- [MetricStream GRC Platform vs IBM OpenPages](https://cybersectools.com/compare/ibm-openpages-vs-metricstream-ai-first-connected-grc)

## Alternatives to each

- [See all Diligent One Platform alternatives](https://cybersectools.com/alternatives/diligent-ai)
- [See all MetricStream GRC Platform alternatives](https://cybersectools.com/alternatives/metricstream-ai-first-connected-grc)

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Source: https://cybersectools.com/compare/diligent-ai-vs-metricstream-ai-first-connected-grc

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

More on Diligent One Platform and MetricStream GRC Platform: 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