# GrammaTech DDisasm vs Nightwing DejaVM: side-by-side comparison (2026)

[GrammaTech DDisasm](https://cybersectools.com/tools/grammatech-ddisasm) is a free [malware analysis](https://cybersectools.com/categories/malware-analysis) solution by [GrammaTech](https://cybersectools.com/companies/grammatech). [Nightwing DejaVM](https://cybersectools.com/tools/nightwing-dejavm) is a commercial [malware analysis](https://cybersectools.com/categories/malware-analysis) solution by [Nightwing](https://cybersectools.com/companies/nightwing). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | GrammaTech DDisasm | Nightwing DejaVM |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Malware Analysis | Malware Analysis |
| Verified | No | No |
| Deployment type | On-Premises | On-Premises |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | GrammaTech | Nightwing |
| Headquarters | – | – |

### Use cases and capabilities

| | GrammaTech DDisasm | Nightwing DejaVM |
|---|---|---|
| Binary Analysis | Yes | Yes |
| Open Source | Yes | – |
| Reverse Engineering | Yes | Yes |
| Emulation | – | Yes |
| Vulnerability Research | – | Yes |
| Security Research | – | Yes |
| Dynamic Analysis | – | Yes |

### Core features

**GrammaTech DDisasm**

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

**Nightwing DejaVM**

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

### Integrations

**GrammaTech DDisasm**

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

**Nightwing DejaVM**

No integrations listed.

## Which one fits you

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

- [GrammaTech DDisasm](https://cybersectools.com/tools/grammatech-ddisasm) fits if you need a free product.

## GrammaTech DDisasm vs Nightwing DejaVM FAQ

Common questions when comparing GrammaTech DDisasm vs Nightwing DejaVM for malware analysis.

### What is the difference between GrammaTech DDisasm and Nightwing DejaVM?

**GrammaTech DDisasm**: Fast disassembler producing reassemblable assembly code using Datalog. Built by GrammaTech.

**Nightwing DejaVM**: Whole-system emulation environment for software dev, debugging, testing & security. Built by Nightwing.

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

### Who makes GrammaTech DDisasm and Nightwing DejaVM?

**GrammaTech DDisasm** is made by GrammaTech. **Nightwing DejaVM** is made by Nightwing. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is GrammaTech DDisasm a good alternative to Nightwing DejaVM?

Often, yes. GrammaTech DDisasm and Nightwing DejaVM are both Malware Analysis products, and both cover Reverse Engineering, Binary Analysis. Key differences: GrammaTech DDisasm is Free while Nightwing DejaVM is Commercial. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [GrammaTech DDisasm vs CodeHunter Labs](https://cybersectools.com/compare/codehunter-labs-vs-grammatech-ddisasm)
- [GrammaTech DDisasm vs Joe Sandbox DEC](https://cybersectools.com/compare/grammatech-ddisasm-vs-joe-sandbox-dec)
- [GrammaTech DDisasm vs Joe Security Joe Reverser](https://cybersectools.com/compare/grammatech-ddisasm-vs-joe-security-joe-reverser)
- [Nightwing DejaVM vs CodeHunter Labs](https://cybersectools.com/compare/codehunter-labs-vs-nightwing-dejavm)
- [Nightwing DejaVM vs Joe Sandbox DEC](https://cybersectools.com/compare/joe-sandbox-dec-vs-nightwing-dejavm)
- [Nightwing DejaVM vs Joe Security Joe Reverser](https://cybersectools.com/compare/joe-security-joe-reverser-vs-nightwing-dejavm)

## Alternatives to each

- [See all GrammaTech DDisasm alternatives](https://cybersectools.com/alternatives/grammatech-ddisasm)
- [See all Nightwing DejaVM alternatives](https://cybersectools.com/alternatives/nightwing-dejavm)

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Source: https://cybersectools.com/compare/grammatech-ddisasm-vs-nightwing-dejavm

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More on GrammaTech DDisasm and Nightwing DejaVM: 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