# Mastiff vs PEview: side-by-side comparison (2026)

[Mastiff](https://cybersectools.com/tools/mastiff) is a free [malware analysis](https://cybersectools.com/categories/malware-analysis) solution. [PEview](https://cybersectools.com/tools/peview) is a free [malware analysis](https://cybersectools.com/categories/malware-analysis) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Mastiff | PEview |
|---|---|---|
| Pricing model | Free | Free |
| Category | Malware Analysis | Malware Analysis |
| Verified | No | No |
| Deployment type | On-Premises | On-Premises |
| Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | 185 | – |
| Last commit | Sep 2015 | – |

### Use cases and capabilities

| | Mastiff | PEview |
|---|---|---|
| File Analysis | Yes | Yes |
| Binary Analysis | Yes | Yes |

## Which one fits you

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

- [Mastiff](https://cybersectools.com/tools/mastiff) fits if you want an open-source product.
- [PEview](https://cybersectools.com/tools/peview) fits if you are a startup or a small business.

## Mastiff vs PEview FAQ

Common questions when comparing Mastiff vs PEview for malware analysis.

### What is the difference between Mastiff and PEview?

**Mastiff**: A static analysis framework for extracting key characteristics from various file formats.

**PEview**: A PE/COFF file viewer that displays header, section, directory, import table, export table, and resource information within various file types.

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

### Is Mastiff a good alternative to PEview?

Often, yes. Mastiff and PEview are both Malware Analysis products, and both cover File Analysis, Binary Analysis. Key differences: Mastiff is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Mastiff vs ReversingLabs Spectra Analyze](https://cybersectools.com/compare/mastiff-vs-reversinglabs-spectra-analyze)
- [Mastiff vs Cyber Triage Malware Forensics Tool](https://cybersectools.com/compare/cyber-triage-malware-forensics-tool-vs-mastiff)
- [Mastiff vs Joe Security Joe Reverser](https://cybersectools.com/compare/joe-security-joe-reverser-vs-mastiff)
- [PEview vs ReversingLabs Spectra Analyze](https://cybersectools.com/compare/peview-vs-reversinglabs-spectra-analyze)
- [PEview vs Cyber Triage Malware Forensics Tool](https://cybersectools.com/compare/cyber-triage-malware-forensics-tool-vs-peview)
- [PEview vs Joe Security Joe Reverser](https://cybersectools.com/compare/joe-security-joe-reverser-vs-peview)

## Alternatives to each

- [See all Mastiff alternatives](https://cybersectools.com/alternatives/mastiff)
- [See all PEview alternatives](https://cybersectools.com/alternatives/peview)

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Source: https://cybersectools.com/compare/mastiff-vs-peview

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

More on Mastiff and PEview: 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