# Meterian ISAAC vs Promptfoo Code Scanning / GitHub Action: side-by-side comparison (2026)

[Meterian ISAAC](https://cybersectools.com/tools/meterian-isaac) is a commercial [static application security testing](https://cybersectools.com/categories/sast) solution by [Meterian](https://cybersectools.com/companies/meterian). [Promptfoo Code Scanning / GitHub Action](https://cybersectools.com/tools/promptfoo-code-scanning-github-action) is a free [static application security testing](https://cybersectools.com/categories/sast) solution by [Promptfoo](https://cybersectools.com/companies/promptfoo). Features, integrations, deployment and the company behind each one, side by side.

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## Side-by-side comparison

| | Meterian ISAAC | Promptfoo Code Scanning / GitHub Action |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Static Application Security Testing | Static Application Security Testing |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Meterian | Promptfoo |
| Headquarters | – | – |

### Use cases and capabilities

| | Meterian ISAAC | Promptfoo Code Scanning / GitHub Action |
|---|---|---|
| Infrastructure as Code | Yes | – |
| DevSecOps | Yes | Yes |
| CI/CD | Yes | Yes |
| Misconfiguration | Yes | – |
| Security Scanning | Yes | Yes |
| Kubernetes | Yes | – |
| Secret Detection | Yes | – |
| LLM Security | – | Yes |
| Prompt Injection | – | Yes |
| GenAI Security | – | Yes |
| Agentic AI Security | – | Yes |
| Scanner | – | Yes |
| PII | – | Yes |
| Data Exfiltration | – | Yes |

### Core features

**Meterian ISAAC**

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

**Promptfoo Code Scanning / GitHub Action**

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

### Integrations

**Meterian ISAAC**

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

**Promptfoo Code Scanning / GitHub Action**

2 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.

- [Promptfoo Code Scanning / GitHub Action](https://cybersectools.com/tools/promptfoo-code-scanning-github-action) fits if you are a startup and you need a free product.

## Meterian ISAAC vs Promptfoo Code Scanning / GitHub Action FAQ

Common questions when comparing Meterian ISAAC vs Promptfoo Code Scanning / GitHub Action for static application security testing.

### What is the difference between Meterian ISAAC and Promptfoo Code Scanning / GitHub Action?

**Meterian ISAAC**: IaC scanner detecting misconfigs, vulnerabilities & policy violations in templates, built by Meterian.

**Promptfoo Code Scanning / GitHub Action**: GitHub Action scanner for LLM-specific app vulnerabilities like prompt injection, built by Promptfoo.

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

### Who makes Meterian ISAAC and Promptfoo Code Scanning / GitHub Action?

**Meterian ISAAC** is made by Meterian. **Promptfoo Code Scanning / GitHub Action** is made by Promptfoo. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Meterian ISAAC a good alternative to Promptfoo Code Scanning / GitHub Action?

Often, yes. Meterian ISAAC and Promptfoo Code Scanning / GitHub Action are both Static Application Security Testing products, and both cover DevSecOps, CI/CD, Security Scanning. Key differences: Meterian ISAAC is Commercial while Promptfoo Code Scanning / GitHub Action is Free. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Meterian ISAAC vs Aikido Infrastructure as Code (IaC)](https://cybersectools.com/compare/aikido-infrastructure-as-code-iac-vs-meterian-isaac)
- [Meterian ISAAC vs Start Left® IaC Security](https://cybersectools.com/compare/meterian-isaac-vs-start-leftr-iac-security)
- [Meterian ISAAC vs Amnify Code](https://cybersectools.com/compare/amnify-code-vs-meterian-isaac)
- [Promptfoo Code Scanning / GitHub Action vs Aikido Infrastructure as Code (IaC)](https://cybersectools.com/compare/aikido-infrastructure-as-code-iac-vs-promptfoo-code-scanning-github-action)
- [Promptfoo Code Scanning / GitHub Action vs Start Left® IaC Security](https://cybersectools.com/compare/promptfoo-code-scanning-github-action-vs-start-leftr-iac-security)
- [Promptfoo Code Scanning / GitHub Action vs Amnify Code](https://cybersectools.com/compare/amnify-code-vs-promptfoo-code-scanning-github-action)

## Alternatives to each

- [See all Meterian ISAAC alternatives](https://cybersectools.com/alternatives/meterian-isaac)
- [See all Promptfoo Code Scanning / GitHub Action alternatives](https://cybersectools.com/alternatives/promptfoo-code-scanning-github-action)

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Source: https://cybersectools.com/compare/meterian-isaac-vs-promptfoo-code-scanning-github-action

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

More on Meterian ISAAC and Promptfoo Code Scanning / GitHub Action: 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