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ILSpy vs KDiff3

Professional comparison and analysis to help you choose the right software solution for your needs.

ILSpy icon
ILSpy
KDiff3 icon
KDiff3

ILSpy vs KDiff3: The Verdict

⚡ Summary:

ILSpy: ILSpy is a free, open-source .NET assembly browser and decompiler. It allows you to view and analyze the contents of .NET assemblies in C# and other .NET languages.

KDiff3: KDiff3 is a free open source diff and merge tool for Windows, Mac, and Linux. It allows users to compare files and directories, shows differences in side-by-side and inline layouts, and helps merge changes between versions. KDiff3 supports Unicode, auto-detection of encodings, and editing actions during merges.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature ILSpy KDiff3
Sugggest Score — —
Category Development Development
Pricing Open Source Free

Product Overview

ILSpy
ILSpy

Description: ILSpy is a free, open-source .NET assembly browser and decompiler. It allows you to view and analyze the contents of .NET assemblies in C# and other .NET languages.

Type: software

Pricing: Open Source

KDiff3
KDiff3

Description: KDiff3 is a free open source diff and merge tool for Windows, Mac, and Linux. It allows users to compare files and directories, shows differences in side-by-side and inline layouts, and helps merge changes between versions. KDiff3 supports Unicode, auto-detection of encodings, and editing actions during merges.

Type: software

Pricing: Free

Key Features Comparison

ILSpy
ILSpy Features
  • Decompile .NET assemblies into C# and other .NET languages
  • Navigate and view the contents of assemblies
  • Search for types, methods, properties, etc.
  • View metadata and attributes for types and members
  • Compare different versions of assemblies
  • Plugin architecture to extend functionality
KDiff3
KDiff3 Features
  • Compares and merges text files or directories
  • Supports 2-way and 3-way merges
  • Shows differences in side-by-side or inline layouts
  • Syntax highlighting for many file types
  • Unicode support
  • Auto-detection of character encodings
  • Editing actions during merge
  • Configurable diff engine

Pros & Cons Analysis

ILSpy
ILSpy
Pros
  • Free and open source
  • Works on Windows, Linux and Mac
  • Supports wide range of .NET assembly versions
  • Integrates with Visual Studio
  • Active development and user community
Cons
  • Limited decompilation of obfuscated assemblies
  • No official support offered
  • UI is basic and unpolished in places
  • Steep learning curve for some advanced features
KDiff3
KDiff3
Pros
  • Free and open source
  • Available for Windows, Mac and Linux
  • Intuitive and easy to use interface
  • Many advanced features for power users
  • Integrates with version control systems
Cons
  • Limited documentation and support
  • Slower performance with large files
  • No cloud sync or collaboration features

Pricing Comparison

ILSpy
ILSpy
  • Open Source
KDiff3
KDiff3
  • Free

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Learn More About Each Product

ILSpy
ILSpy
Reviews, pricing & alternatives →
KDiff3
KDiff3
Reviews, pricing & alternatives →

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