ILSpy
An open-source .NET assembly browser and decompiler with support for PDB generation, ReadyToRun, and cross-platform usage.
What is ILSpy?
ILSpy is an open-source .NET assembly browser and decompiler that allows developers to inspect and reverse-engineer compiled .NET code into readable C#. It solves the problem of understanding third-party libraries, debugging opaque assemblies, and learning from existing codebases without access to original source code.
.NET developers, software engineers, and security researchers who need to analyze, debug, or understand compiled .NET assemblies, including those working with legacy code or third-party libraries.
Developers choose ILSpy for its accuracy, extensive feature set (like PDB generation and ReadyToRun support), and seamless integration with Visual Studio and VS Code, all while being completely free and open-source compared to commercial alternatives.
Overview
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
Use Cases
Best For
- Reverse-engineering third-party .NET libraries to understand their implementation
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