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.
decompiler
dotnet
net
c
opensource
ILSpy: Free .NET Assembly Browser & Decompilers
Free, open-source .NET assembly browser and decompiler for analyzing .NET assemblies in C# and other .NET languages.
What is ILSpy?
ILSpy is an open-source .NET decompiler and assembly browser. It allows developers to easily inspect, navigate, view docs for, and decompile the contents of .NET managed assemblies. Some key features of ILSpy include:
- Decompiling .NET assemblies into C# and other .NET languages
- Browsing types, methods, properties in a .NET assembly
- Viewing documentation comments in the source code
- Searching for types, methods, strings, etc. across assemblies
- Plugin architecture to extend functionality
- Lightweight and fast user interface
- Cross-platform - runs on Windows, Linux, and macOS
ILSpy is commonly used for understanding and troubleshooting third-party .NET libraries, performing code reviews, and learning how other developers structure and implement .NET applications. It can decompile code back to a near-original state which makes it easy to browse and analyze .NET assemblies even without source code access.
ILSpy Features
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
Pricing
- Open Source
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
Official Links
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