# FYEO Custom Fuzz Testing vs Gecko Security: side-by-side comparison (2026)

[FYEO Custom Fuzz Testing](https://cybersectools.com/tools/fyeo-custom-fuzz-testing) is a commercial [smart-contract scanning & dev security](https://cybersectools.com/categories/smart-contract-scanning) solution by [FYEO](https://cybersectools.com/companies/fyeo). [Gecko Security](https://cybersectools.com/tools/gecko-security) is a commercial [static application security testing](https://cybersectools.com/categories/sast) solution by [Gecko Security](https://cybersectools.com/companies/gecko-security). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | FYEO Custom Fuzz Testing | Gecko Security |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Smart-Contract Scanning & Dev Security | Static Application Security Testing |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | FYEO | Gecko Security |
| Headquarters | – | – |

### Use cases and capabilities

| | FYEO Custom Fuzz Testing | Gecko Security |
|---|---|---|
| Fuzzing | Yes | – |
| CI/CD | Yes | Yes |
| SAST | – | Yes |
| DevSecOps | – | Yes |
| Vulnerability Prioritization | – | Yes |
| Threat Modeling | – | Yes |
| Source Code Analysis | – | Yes |
| App Security | – | Yes |
| Vulnerability | – | Yes |
| Natural Language Processing | – | Yes |
| Security Scanning | – | Yes |

### Core features

**FYEO Custom Fuzz Testing**

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

**Gecko Security**

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

### Integrations

**FYEO Custom Fuzz Testing**

No integrations listed.

**Gecko Security**

7 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.

- [Gecko Security](https://cybersectools.com/tools/gecko-security) fits if you are a startup or a small business.

## FYEO Custom Fuzz Testing vs Gecko Security FAQ

Common questions when comparing FYEO Custom Fuzz Testing vs Gecko Security for smart-contract scanning & dev security.

### What is the difference between FYEO Custom Fuzz Testing and Gecko Security?

**FYEO Custom Fuzz Testing**: Custom blockchain fuzz testing service with bespoke harnesses & CI integration. Built by FYEO.

**Gecko Security**: AI-native SAST platform finding multi-step & business logic vulns in code. Built by Gecko Security.

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

### Who makes FYEO Custom Fuzz Testing and Gecko Security?

**FYEO Custom Fuzz Testing** is made by FYEO. **Gecko Security** is made by Gecko Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is FYEO Custom Fuzz Testing a good alternative to Gecko Security?

In part. FYEO Custom Fuzz Testing and Gecko Security are not in the same category on CybersecTools. Both cover CI/CD. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [FYEO Custom Fuzz Testing vs Olympix Enterprise-Grade Security Tools](https://cybersectools.com/compare/fyeo-custom-fuzz-testing-vs-olympix-enterprise-grade-security-tools)
- [FYEO Custom Fuzz Testing vs Dedge Security W3SPM](https://cybersectools.com/compare/dedge-security-w3spm-vs-fyeo-custom-fuzz-testing)
- [FYEO Custom Fuzz Testing vs CredShields SolidityScan](https://cybersectools.com/compare/credshields-solidityscan-vs-fyeo-custom-fuzz-testing)
- [Gecko Security vs Olympix Enterprise-Grade Security Tools](https://cybersectools.com/compare/gecko-security-vs-olympix-enterprise-grade-security-tools)
- [Gecko Security vs Dedge Security W3SPM](https://cybersectools.com/compare/dedge-security-w3spm-vs-gecko-security)
- [Gecko Security vs CredShields SolidityScan](https://cybersectools.com/compare/credshields-solidityscan-vs-gecko-security)

## Alternatives to each

- [See all FYEO Custom Fuzz Testing alternatives](https://cybersectools.com/alternatives/fyeo-custom-fuzz-testing)
- [See all Gecko Security alternatives](https://cybersectools.com/alternatives/gecko-security)

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Source: https://cybersectools.com/compare/fyeo-custom-fuzz-testing-vs-gecko-security

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

More on FYEO Custom Fuzz Testing and Gecko Security: 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