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Editors' Review · November 4, 2025

Free Assembly Debugger and Editor

DnSpy is a totally free programming utility that is essential for software developers. It is a handy tool that can help developers understand an obscure .NET assembly in a more efficient way. DnSpy includes an assembly editor, debugger, and decompiler, which aid in grasping the functionalities of the assembly better.

DnSpy is an open-source and portable program that requires no installation. Simply unpack the archive and launch the program.

DnSpy is a powerful computer package containing appropriate toolsets to address the vague .NET assembly. It has a comprehensive and elegant user interface with a wide range of function panels neatly grouped in standard menus. The configuration window allows you to modify settings for different components, customize the display, and other relevant parameters. The Assembly Explorer pane provides a tree view of a specific assembly.

DnSpy is a valuable companion for software developers who need to scrutinize an assembly to accurately interpret its capacity. With its user-friendly interface, developers can decompile, debug, and edit .NET assemblies with ease. However, it may be challenging for novice users.

Pros: User-friendly interface, comprehensive tools, free, open-source, and portable, highly customizable.

Cons: Requires advanced programming knowledge.

Enlarged image for dnSpy
dnSpy 0/1

Technical

Title
dnSpy 6.5.1 for Windows
Requirements
Windows 11
License
Free
Latest update
Author
dnSpy
SHA-1
ba5e0e0dcc682d62852e3500858d715b1d0758e5
Filename
6.5.1.zip

Program available in other languages



Changelog

We don’t have any change log information yet for version 6.5.1 of dnSpy. Sometimes publishers take a little while to make this information available, so please check back in a few days to see if it has been updated.

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