# Probely (Snyk API & Web) vs Source Defense How it works: side-by-side comparison (2026)

[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). [Source Defense How it works](https://cybersectools.com/tools/source-defense-how-it-works) 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

| | Probely (Snyk API & Web) | Source Defense How it works |
|---|---|---|
| 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 | Probely | Source Defense |
| Headquarters | – | – |

### Use cases and capabilities

| | Probely (Snyk API & Web) | Source Defense How it works |
|---|---|---|
| DAST | Yes | – |
| Web Security | Yes | Yes |
| DevSecOps | Yes | – |
| OWASP | Yes | – |
| Security Scanning | Yes | – |
| Sandbox | – | Yes |
| Browser Security | – | Yes |

### Core features

**Probely (Snyk API & Web)**

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

**Source Defense How it works**

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

### Integrations

**Probely (Snyk API & Web)**

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

**Source Defense How it works**

No integrations listed.

## Probely (Snyk API & Web) vs Source Defense How it works FAQ

Common questions when comparing Probely (Snyk API & Web) vs Source Defense How it works for dynamic application security testing.

### What is the difference between Probely (Snyk API & Web) and Source Defense How it works?

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

**Source Defense How it works**: Client-side security for websites against 3rd party vendor attacks. Built by Source Defense.

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

### Who makes Probely (Snyk API & Web) and Source Defense How it works?

**Probely (Snyk API & Web)** is made by Probely. **Source Defense How it works** 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 Probely (Snyk API & Web) a good alternative to Source Defense How it works?

In part. Probely (Snyk API & Web) and Source Defense How it works 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

- [Probely (Snyk API & Web) vs Guardian360 Lighthouse](https://cybersectools.com/compare/guardian360-lighthouse-vs-probely-snyk-api-and-web)
- [Probely (Snyk API & Web) vs SOOS DAST](https://cybersectools.com/compare/probely-snyk-api-and-web-vs-soos-dast)
- [Probely (Snyk API & Web) vs Qualys TotalAppSec](https://cybersectools.com/compare/probely-snyk-api-and-web-vs-qualys-totalappsec)
- [Source Defense How it works vs Guardian360 Lighthouse](https://cybersectools.com/compare/guardian360-lighthouse-vs-source-defense-how-it-works)
- [Source Defense How it works vs SOOS DAST](https://cybersectools.com/compare/soos-dast-vs-source-defense-how-it-works)
- [Source Defense How it works vs Qualys TotalAppSec](https://cybersectools.com/compare/qualys-totalappsec-vs-source-defense-how-it-works)

## Alternatives to each

- [See all Probely (Snyk API & Web) alternatives](https://cybersectools.com/alternatives/probely-snyk-api-and-web)
- [See all Source Defense How it works alternatives](https://cybersectools.com/alternatives/source-defense-how-it-works)

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Source: https://cybersectools.com/compare/probely-snyk-api-and-web-vs-source-defense-how-it-works

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

More on Probely (Snyk API & Web) and Source Defense How it works: 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