ILSpy is the open-source .NET assembly browser and decompiler.

Download: latest release | latest CI build

Note: Only the CI builds support .NET Standard/Core assemblies. However, those builds are not yet at feature parity with the released bits, see C# language support status for details.

Looking for a (Linux/Mac/Windows) command line client (or a sample for the ICSharpCode.Decompiler Nuget)? Check out ICSharpCode.Decompiler.Console!

ILSpy is distributed under the MIT License.

Included open-source libraries:

• Mono.Cecil: MIT License (thanks to Jb Evain)
• AvalonEdit: LGPL
• SharpTreeView: LGPL
• ICSharpCode.Decompiler: MIT License (developed as part of ILSpy)
• Ricciolo.StylesExplorer: MS-PL (part of ILSpy.BamlDecompiler.Plugin)
• Newtonsoft Json.NET: MIT License