# RoboShadow OWASP ZAP Vulnerability Scanner vs testssl.sh: side-by-side comparison (2026)

[RoboShadow OWASP ZAP Vulnerability Scanner](https://cybersectools.com/tools/roboshadow-owasp-zap-vulnerability-scanner) is a commercial [security scanning](https://cybersectools.com/categories/security-scanning) solution by [RoboShadow](https://cybersectools.com/companies/roboshadow). [testssl.sh](https://cybersectools.com/tools/testsslsh) is a free [security scanning](https://cybersectools.com/categories/security-scanning) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | RoboShadow OWASP ZAP Vulnerability Scanner | testssl.sh |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Security Scanning | Security Scanning |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 8,956 |
| Last commit | – | Mar 2026 |
| Company | RoboShadow | – |
| Headquarters | – | – |

### Use cases and capabilities

| | RoboShadow OWASP ZAP Vulnerability Scanner | testssl.sh |
|---|---|---|
| Network Scanning | Yes | – |
| Patch Management | Yes | – |
| XSS | Yes | – |
| TLS | – | Yes |
| SSL | – | Yes |
| Protocol | – | Yes |

### Core features

**RoboShadow OWASP ZAP Vulnerability Scanner**

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

**testssl.sh**

No features listed.

### Integrations

**RoboShadow OWASP ZAP Vulnerability Scanner**

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

**testssl.sh**

No integrations listed.

## Which one fits you

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

- [RoboShadow OWASP ZAP Vulnerability Scanner](https://cybersectools.com/tools/roboshadow-owasp-zap-vulnerability-scanner) fits if you need both cloud and on-premises options.
- [testssl.sh](https://cybersectools.com/tools/testsslsh) 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.

## RoboShadow OWASP ZAP Vulnerability Scanner vs testssl.sh FAQ

Common questions when comparing RoboShadow OWASP ZAP Vulnerability Scanner vs testssl.sh for security scanning.

### What is the difference between RoboShadow OWASP ZAP Vulnerability Scanner and testssl.sh?

**RoboShadow OWASP ZAP Vulnerability Scanner**: Web app & network vulnerability scanner integrating OWASP ZAP, Shodan & Nmap. Built by RoboShadow.

**testssl.sh**: Testssl.sh is a free command line tool for checking server's TLS/SSL configurations with clear and machine-readable output.

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

### Who makes RoboShadow OWASP ZAP Vulnerability Scanner and testssl.sh?

**RoboShadow OWASP ZAP Vulnerability Scanner** is made by RoboShadow. **testssl.sh** is open-source with 8,956 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is RoboShadow OWASP ZAP Vulnerability Scanner a good alternative to testssl.sh?

Often, yes. RoboShadow OWASP ZAP Vulnerability Scanner and testssl.sh are both Security Scanning products. Key differences: RoboShadow OWASP ZAP Vulnerability Scanner is Commercial while testssl.sh is Free, testssl.sh is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [RoboShadow OWASP ZAP Vulnerability Scanner vs Domain Verity](https://cybersectools.com/compare/domain-verity-vs-roboshadow-owasp-zap-vulnerability-scanner)
- [RoboShadow OWASP ZAP Vulnerability Scanner vs CyberChecker](https://cybersectools.com/compare/cyberchecker-vs-roboshadow-owasp-zap-vulnerability-scanner)
- [RoboShadow OWASP ZAP Vulnerability Scanner vs Sucuri Website Malware Scanner](https://cybersectools.com/compare/roboshadow-owasp-zap-vulnerability-scanner-vs-sucuri-website-malware-scanner)
- [testssl.sh vs Domain Verity](https://cybersectools.com/compare/domain-verity-vs-testsslsh)
- [testssl.sh vs CyberChecker](https://cybersectools.com/compare/cyberchecker-vs-testsslsh)
- [testssl.sh vs Sucuri Website Malware Scanner](https://cybersectools.com/compare/sucuri-website-malware-scanner-vs-testsslsh)

## Alternatives to each

- [See all RoboShadow OWASP ZAP Vulnerability Scanner alternatives](https://cybersectools.com/alternatives/roboshadow-owasp-zap-vulnerability-scanner)
- [See all testssl.sh alternatives](https://cybersectools.com/alternatives/testsslsh)

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Source: https://cybersectools.com/compare/roboshadow-owasp-zap-vulnerability-scanner-vs-testsslsh

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

More on RoboShadow OWASP ZAP Vulnerability Scanner and testssl.sh: 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