# CSP Auditor vs Probely (Snyk API & Web): side-by-side comparison (2026)

[CSP Auditor](https://cybersectools.com/tools/csp-auditor) is a free [dynamic application security testing](https://cybersectools.com/categories/dast) solution. [Probely (Snyk API & Web)](https://cybersectools.com/tools/probely-snyk-api-and-web) is a commercial [dynamic application security testing](https://cybersectools.com/categories/dast) solution by [Probely](https://cybersectools.com/companies/probely). Features, integrations, deployment and the company behind each one, side by side.

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## Side-by-side comparison

| | CSP Auditor | Probely (Snyk API & Web) |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Dynamic Application Security Testing | Dynamic Application Security Testing |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | 141 | – |
| Last commit | Apr 2020 | – |
| Company | – | Probely |
| Headquarters | – | – |

### Use cases and capabilities

| | CSP Auditor | Probely (Snyk API & Web) |
|---|---|---|
| Content Security Policy | Yes | – |
| DAST | – | Yes |
| Web Security | – | Yes |
| DevSecOps | – | Yes |
| OWASP | – | Yes |
| Security Scanning | – | Yes |

### Core features

**CSP Auditor**

No features listed.

**Probely (Snyk API & Web)**

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

### Integrations

**CSP Auditor**

No integrations listed.

**Probely (Snyk API & Web)**

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.

- [CSP Auditor](https://cybersectools.com/tools/csp-auditor) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
- [Probely (Snyk API & Web)](https://cybersectools.com/tools/probely-snyk-api-and-web) fits if you want a cloud product.

## CSP Auditor vs Probely (Snyk API & Web) FAQ

Common questions when comparing CSP Auditor vs Probely (Snyk API & Web) for dynamic application security testing.

### What is the difference between CSP Auditor and Probely (Snyk API & Web)?

**CSP Auditor**: A plugin for viewing, detecting weak configurations, and generating Content Security Policy headers.

**Probely (Snyk API & Web)**: DAST scanner for discovering and testing APIs and web apps for vulns. Built by Probely.

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

### Who makes CSP Auditor and Probely (Snyk API & Web)?

**CSP Auditor** is open-source with 141 GitHub stars. **Probely (Snyk API & Web)** is made by Probely. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CSP Auditor a good alternative to Probely (Snyk API & Web)?

Often, yes. CSP Auditor and Probely (Snyk API & Web) are both Dynamic Application Security Testing products. Key differences: CSP Auditor is Free while Probely (Snyk API & Web) is Commercial, CSP Auditor is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [CSP Auditor vs Guardian360 Lighthouse](https://cybersectools.com/compare/csp-auditor-vs-guardian360-lighthouse)
- [CSP Auditor vs Cobalt DAST](https://cybersectools.com/compare/cobalt-dast-vs-csp-auditor)
- [CSP Auditor vs Astra Security DAST Scanner](https://cybersectools.com/compare/astra-security-dast-scanner-vs-csp-auditor)
- [Probely (Snyk API & Web) vs Guardian360 Lighthouse](https://cybersectools.com/compare/guardian360-lighthouse-vs-probely-snyk-api-and-web)
- [Probely (Snyk API & Web) vs Cobalt DAST](https://cybersectools.com/compare/cobalt-dast-vs-probely-snyk-api-and-web)
- [Probely (Snyk API & Web) vs Astra Security DAST Scanner](https://cybersectools.com/compare/astra-security-dast-scanner-vs-probely-snyk-api-and-web)

## Alternatives to each

- [See all CSP Auditor alternatives](https://cybersectools.com/alternatives/csp-auditor)
- [See all Probely (Snyk API & Web) alternatives](https://cybersectools.com/alternatives/probely-snyk-api-and-web)

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Source: https://cybersectools.com/compare/csp-auditor-vs-probely-snyk-api-and-web

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

More on CSP Auditor and Probely (Snyk API & Web): 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