dnSpyEx
dnSpyEx is an unofficial continuation of dnSpy, a debugger and .NET assembly editor for working with assemblies when source code is unavailable.
What dnSpyEx is
dnSpyEx is an unofficial continuation of dnSpy, a debugger and .NET assembly editor for working with assemblies when source code is unavailable. It can debug .NET Framework, .NET, and Unity game assemblies with breakpoints, tracepoints, conditional breakpoints, and multi-process debugging. Its editing tools handle metadata and methods or classes in C# and Visual Basic, as well as low-level IL method bodies. Decompilers cover C# and Visual Basic through the ILSpy engine, alongside BAML decompilation and disassembly. Users can search assemblies, inspect class and method usage, find callers, bookmark items, and export projects. A public API enables extensions, and a C# Interactive window can control or script the app. The project lists v6.6.0 as its latest stable release, adding a .NET 10 distribution. Its release notes describe Linux use through Wine compatibility adjustments, not native Linux support. Dynamic methods cannot be debugged because of CLR limitations. The project is GPLv3-licensed and free.
Good
- Debugs .NET Framework, .NET, and Unity assemblies.
- Edits C#, Visual Basic, and IL.
- Includes C# and Visual Basic decompilers.
- Searches assemblies and analyzes method usage.
- Free under GPLv3.
Watch out
- Dynamic methods cannot be debugged.
- Linux use is via Wine, not native support.
- Unity debugging also requires a separate repository.
Who it suits
dnSpyEx suits developers examining, debugging, or editing .NET assemblies without source code. Unity debugging requires the separate dnSpyEx Unity Mono repository.
Verdict
dnSpyEx brings assembly editing, decompilation, and debugging into one free tool. Note its dynamic-method debugging limit and Wine-based Linux support.
Plans and prices
From dnSpyEx's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| dnSpyEx | Free | GPLv3-licensed · Latest stable release and beta builds available |
The facts
Each one read from dnSpyEx's own pages, with the date it was checked.
What it does
- Analysis tools
- Features include searching assemblies, analyzing class and method usage, finding callers, bookmarks, and exporting to a project.checked 4 Oct 2026
- Assembly editing
- It supports editing metadata and methods or classes in C# and Visual Basic, as well as low-level IL method-body editing.checked 4 Oct 2026
- Current release
- The releases page lists v6.6.0 as the latest stable release and says the release adds a .NET 10 distribution.checked 4 Oct 2026
- Debugging
- It can debug .NET Framework, .NET, and Unity game assemblies, with breakpoints, tracepoints, conditional breakpoints, and multiple-process debugging.checked 4 Oct 2026
- Decompilation
- The project lists C# and Visual Basic decompilers using the ILSpy decompiler engine, plus a BAML decompiler and disassembler.checked 4 Oct 2026
- Integrations
- To debug Unity games, the project says the dnSpyEx Unity Mono repository is also needed.checked 4 Oct 2026
- License
- The repository states that dnSpy is licensed under GPLv3.checked 4 Oct 2026
- Limits
- The project notes that dynamic methods cannot be debugged because of CLR limitations.checked 4 Oct 2026
- Maintainer support
- The v6.6.0 release notes direct users of third-party extensions to their extension developers for help with extension issues.checked 4 Oct 2026
- Purpose
- dnSpyEx is an unofficial continuation of dnSpy, a debugger and .NET assembly editor for working with assemblies without source code.checked 4 Oct 2026
- Scripting and extensions
- A public API supports extensions, and the C# Interactive window can be used to control or script dnSpy.checked 4 Oct 2026
- Security and integrity
- The v6.6.0 release lists SHA-256 hashes for its ZIP distributions and says the release commit was signed with a verified committer signature.checked 4 Oct 2026
Where it runs
- Platform support
- The v6.6.0 notes describe Windows 11 Snap Layout support and Wine compatibility adjustments for running dnSpy on Linux; they do not describe native Linux support.checked 4 Oct 2026
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