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dnSpyEx vs ILSpy: catalog facts
dnSpyEx	ILSpy
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Best for: Reverse engineers and developers inspecting or debugging .NET programs	Best for: Browse and decompile .NET assemblies
Free Free and open source.	Free The open-source software is available without a license fee. Hosting, hardware and external services are separate.
Windows	Windows, macOS, Linux
Decompiler, debugger and assembly editor in one tool Debugs .NET assemblies without their source code Maintained continuation of a widely used tool	Provides a graphical way to inspect reconstructed code.
Unofficial fork of the original project Windows only	Decompiled output may differ from the original source.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	Not stated if an account is needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for dnSpyEx github.com/dnSpyEx/dnSpy Catalog checked September 24, 2026	Official website Full listing and sources Sources for ILSpy github.com/icsharpcode/ILSpy github.com/icsharpcode/ILSpy/blob/master/LICENSE Catalog checked September 22, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.

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