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

[ILSpy](https://cybersectools.com/tools/ilspy) is a free [malware analysis](https://cybersectools.com/categories/malware-analysis) solution. [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

| | ILSpy | Nightwing DejaVM |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Malware Analysis | Malware Analysis |
| Verified | No | No |
| Deployment type | On-Premises | On-Premises |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| GitHub stars | 24,766 | – |
| Last commit | Mar 2026 | – |
| Company | – | Nightwing |
| Headquarters | – | – |

### Use cases and capabilities

| | ILSpy | Nightwing DejaVM |
|---|---|---|
| Binary Analysis | Yes | Yes |
| Emulation | – | Yes |
| Reverse Engineering | – | Yes |
| Vulnerability Research | – | Yes |
| Security Research | – | Yes |
| Dynamic Analysis | – | Yes |

### Core features

**ILSpy**

No features listed.

**Nightwing DejaVM**

8 features 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.

- [ILSpy](https://cybersectools.com/tools/ilspy) fits if you are a startup or a small business, you need a free product and you want an open-source product.

## ILSpy vs Nightwing DejaVM FAQ

Common questions when comparing ILSpy vs Nightwing DejaVM for malware analysis.

### What is the difference between ILSpy and Nightwing DejaVM?

**ILSpy**: ILSpy is the open-source .NET assembly browser and decompiler with various decompiler frontends and features.

**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 ILSpy and Nightwing DejaVM?

**ILSpy** is open-source with 24,766 GitHub stars. **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 ILSpy a good alternative to Nightwing DejaVM?

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

## Related comparisons

- [ILSpy vs CodeHunter Labs](https://cybersectools.com/compare/codehunter-labs-vs-ilspy)
- [ILSpy vs Joe Sandbox DEC](https://cybersectools.com/compare/ilspy-vs-joe-sandbox-dec)
- [ILSpy vs Joe Security Joe Reverser](https://cybersectools.com/compare/ilspy-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 ILSpy alternatives](https://cybersectools.com/alternatives/ilspy)
- [See all Nightwing DejaVM alternatives](https://cybersectools.com/alternatives/nightwing-dejavm)

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

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

More on ILSpy 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