Choose Your Download

Select the version that matches your system. All versions include the complete feature set.

💻

dnSpy (64-bit)

Latest Stable Version

Recommended for most users with 64-bit Windows systems. Provides better performance and can handle larger assemblies.

Windows 7 SP1 or later (64-bit)
Full feature set included
Better memory handling
Optimized performance

⬇ Download 64-bit

🖥️

dnSpy (32-bit)

Latest Stable Version

For users with 32-bit Windows systems or specific compatibility requirements. Fully featured and reliable.

Windows 7 SP1 or later (32-bit)
Full feature set included
Legacy system support
Stable and reliable

⬇ Download 32-bit

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Unity Debug Package

Unity Mono Runtime

Additional package required for debugging Unity games. Download this if you plan to debug Unity applications.

Required for Unity game debugging
Unity Mono runtime files
Compatible with all Unity versions
Easy installation

⬇ Download Unity Package

Not sure which version to download?

If you're running Windows 10 or Windows 11, you most likely need the 64-bit version. Right-click on "This PC" or "My Computer" and select "Properties" to check your system type. The Unity Debug Package is only needed if you want to debug Unity games.

Installation Instructions

1️⃣

Download the Package

Click the download button above to get the ZIP file for your system. The download is a portable package that doesn't require installation.

2️⃣

Extract the Files

Extract the ZIP file to a folder of your choice. We recommend creating a dedicated folder like "C:\Tools\dnSpy" for easy access.

3️⃣

Run dnSpy

Navigate to the extracted folder and run "dnSpy.exe" (or "dnSpy-x86.exe" for 32-bit). No installation required - dnSpy is ready to use immediately.

4️⃣

Start Debugging

Open any .NET assembly by dragging and dropping it into dnSpy, or use File > Open to browse for assemblies. Start debugging right away!

System Requirements

Minimum Requirements

✓ Operating System: Windows 7 SP1 or later (64-bit or 32-bit)
✓ .NET Framework: .NET Framework 4.7.2 or later
✓ Memory: 2 GB RAM minimum, 4 GB or more recommended
✓ Storage: 500 MB free disk space
✓ Display: 1024x768 minimum resolution, 1920x1080 recommended

Supported Platforms

✓ Windows 7 SP1
✓ Windows 8 / 8.1
✓ Windows 10
✓ Windows 11
✓ Windows Server 2008 R2 and later

Always Up to Date

We regularly update dnSpy with new features, bug fixes, and performance improvements. Download the latest version to get the best experience. All downloads on this page are the most recent stable releases.

Looking for older versions or source code? Contact us for information about accessing previous releases and building from source.

Download FAQ

Is dnSpy really free?

Yes! dnSpy is completely free and open-source software licensed under GPLv3. You can download, use, and even modify it without any cost.

Do I need to install dnSpy?

No installation is required. dnSpy is a portable application. Simply extract the ZIP file and run the executable. This makes it easy to use on multiple computers or run from a USB drive.

Which version should I download?

If you have a modern Windows system (Windows 10 or 11), download the 64-bit version. Only download the 32-bit version if you have an older 32-bit operating system or specific compatibility needs.

Can I use dnSpy on Mac or Linux?

dnSpy is designed for Windows. However, you may be able to run it on Mac or Linux using Wine or a Windows virtual machine, though this is not officially supported.

How do I update dnSpy?

Simply download the latest version and extract it to a new folder, or replace your existing installation. Your settings and preferences are stored separately and will be preserved.

Is dnSpy safe to download?

Yes, dnSpy is safe to download from our website. It's an open-source project with transparent code that has been reviewed by thousands of developers worldwide.

Ready to Start Debugging?

Download dnSpy now and experience the power of professional .NET debugging and assembly editing. Join thousands of developers who trust dnSpy for their development needs.