# CredShields SolidityScan vs FYEO Custom Fuzz Testing: side-by-side comparison (2026)

[CredShields SolidityScan](https://cybersectools.com/tools/credshields-solidityscan) is a commercial [smart-contract scanning & dev security](https://cybersectools.com/categories/smart-contract-scanning) solution by [CredShields](https://cybersectools.com/companies/credshields). [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). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

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

### Use cases and capabilities

| | CredShields SolidityScan | FYEO Custom Fuzz Testing |
|---|---|---|
| Security Scanning | Yes | – |
| Source Code Analysis | Yes | – |
| Fuzzing | – | Yes |
| CI/CD | – | Yes |

### Core features

**CredShields SolidityScan**

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

**FYEO Custom Fuzz Testing**

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

### Integrations

**CredShields SolidityScan**

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

**FYEO Custom Fuzz Testing**

No integrations listed.

## Which one fits you

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

- [CredShields SolidityScan](https://cybersectools.com/tools/credshields-solidityscan) fits if you want a cloud product and you are a startup or a small business.
- [FYEO Custom Fuzz Testing](https://cybersectools.com/tools/fyeo-custom-fuzz-testing) fits if you need both cloud and on-premises options and you are an enterprise.

## CredShields SolidityScan vs FYEO Custom Fuzz Testing FAQ

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

### What is the difference between CredShields SolidityScan and FYEO Custom Fuzz Testing?

**CredShields SolidityScan**: AI-powered smart contract vulnerability scanner for Solidity code. Built by CredShields.

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

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

### Who makes CredShields SolidityScan and FYEO Custom Fuzz Testing?

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

### Is CredShields SolidityScan a good alternative to FYEO Custom Fuzz Testing?

Often, yes. CredShields SolidityScan and FYEO Custom Fuzz Testing are both Smart-Contract Scanning & Dev Security products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

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

## Alternatives to each

- [See all CredShields SolidityScan alternatives](https://cybersectools.com/alternatives/credshields-solidityscan)
- [See all FYEO Custom Fuzz Testing alternatives](https://cybersectools.com/alternatives/fyeo-custom-fuzz-testing)

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Source: https://cybersectools.com/compare/credshields-solidityscan-vs-fyeo-custom-fuzz-testing

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

More on CredShields SolidityScan and FYEO Custom Fuzz Testing: 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