dnSpyEx
dnSpyEx continues the dnSpy project as a debugger and assembly editor for .NET.
About dnSpyEx
dnSpyEx is an unofficial continuation of the dnSpy project, a debugger and assembly editor for .NET. It can be used to edit and debug .NET and Unity assemblies even when no source code is available. The project is open source and is hosted on GitHub. The listed platform is Windows.
The source describes some limits. Debugging Unity games requires a separate repository, dnSpy-Unity-mono. Dynamic methods cannot be debugged because of CLR limitations. The latest stable release is published on the releases page, and the author also mentions beta builds for users who want newer versions.
Key features
- Debug .NET Framework, .NET, and Unity assemblies without source code
- Edit .NET and Unity assemblies, including all metadata
- Edit methods and classes in C# or Visual Basic with IntelliSense
- IL editor for low-level editing of method bodies
- Breakpoints, tracepoints, and conditional breakpoints, with export and import
- Bypasses for common debugger detection techniques
Best for: Developers and security researchers on Windows who need to debug or edit .NET or Unity assemblies when source code is not available.
Good for
- Source code is publicly available on GitHub
- Can debug and edit assemblies without their source code
- Uses named open source components, including the ILSpy decompiler engine and dnlib
Watch out for
- This is an unofficial continuation of dnSpy, not the original project
- Dynamic methods cannot be debugged because of CLR limitations
- Debugging Unity games requires a separate repository
dnSpyEx at a glance
- Website
- github.com/dnSpyEx/dnSpy
- Category
- Privacy & Security › Security Tools
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Windows
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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dnSpyEx FAQ
Do I need the source code to use dnSpyEx?
No. The project states that it can be used to edit and debug assemblies even when no source code is available.
What do I need to debug Unity games?
The project states that you need the separate dnSpy-Unity-mono repository, in addition to dnSpyEx.
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