# AppCheck SPA Scanner vs Source Defense Platform: side-by-side comparison (2026)

[AppCheck SPA Scanner](https://cybersectools.com/tools/appcheck-spa-scanner) is a commercial [dynamic application security testing](https://cybersectools.com/categories/dast) solution by [AppCheck](https://cybersectools.com/companies/appcheck). [Source Defense Platform](https://cybersectools.com/tools/source-defense-platform) is a commercial [runtime application self-protection](https://cybersectools.com/categories/rasp) solution by [Source Defense](https://cybersectools.com/companies/source-defense). Features, integrations, deployment and the company behind each one, side by side.

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## Side-by-side comparison

| | AppCheck SPA Scanner | Source Defense Platform |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Dynamic Application Security Testing | Runtime Application Self-Protection |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | AppCheck | Source Defense |
| Headquarters | – | – |

### Use cases and capabilities

| | AppCheck SPA Scanner | Source Defense Platform |
|---|---|---|
| DAST | Yes | – |
| OWASP | Yes | – |
| Web Security | Yes | Yes |
| XSS | Yes | – |

### Core features

**AppCheck SPA Scanner**

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

**Source Defense Platform**

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

### Integrations

**AppCheck SPA Scanner**

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

**Source Defense Platform**

No integrations listed.

## AppCheck SPA Scanner vs Source Defense Platform FAQ

Common questions when comparing AppCheck SPA Scanner vs Source Defense Platform for dynamic application security testing.

### What is the difference between AppCheck SPA Scanner and Source Defense Platform?

**AppCheck SPA Scanner**: DAST scanner for Single Page Applications using headless browser technology. Built by AppCheck.

**Source Defense Platform**: Client-side security platform protecting against JavaScript-based threats. Built by Source Defense.

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

### Who makes AppCheck SPA Scanner and Source Defense Platform?

**AppCheck SPA Scanner** is made by AppCheck. **Source Defense Platform** is made by Source Defense. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is AppCheck SPA Scanner a good alternative to Source Defense Platform?

In part. AppCheck SPA Scanner and Source Defense Platform are not in the same category on CybersecTools. Both cover Web Security. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [AppCheck SPA Scanner vs Halo Security Application Scanning](https://cybersectools.com/compare/appcheck-spa-scanner-vs-halo-security-application-scanning)
- [AppCheck SPA Scanner vs Qualys TotalAppSec](https://cybersectools.com/compare/appcheck-spa-scanner-vs-qualys-totalappsec)
- [AppCheck SPA Scanner vs VulnSign Dynamic Application Security Testing](https://cybersectools.com/compare/appcheck-spa-scanner-vs-vulnsign-dynamic-application-security-testing)
- [Source Defense Platform vs Halo Security Application Scanning](https://cybersectools.com/compare/halo-security-application-scanning-vs-source-defense-platform)
- [Source Defense Platform vs Qualys TotalAppSec](https://cybersectools.com/compare/qualys-totalappsec-vs-source-defense-platform)
- [Source Defense Platform vs VulnSign Dynamic Application Security Testing](https://cybersectools.com/compare/source-defense-platform-vs-vulnsign-dynamic-application-security-testing)

## Alternatives to each

- [See all AppCheck SPA Scanner alternatives](https://cybersectools.com/alternatives/appcheck-spa-scanner)
- [See all Source Defense Platform alternatives](https://cybersectools.com/alternatives/source-defense-platform)

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Source: https://cybersectools.com/compare/appcheck-spa-scanner-vs-source-defense-platform

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

More on AppCheck SPA Scanner and Source Defense 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