dnSpy

.NET decompiler + debugger + editor — the primary tool for reversing managed (.NET) binaries.

Installation

# dnSpyEx (actively maintained fork)
# Download from https://github.com/dnSpyEx/dnSpy/releases
# Extract and run dnSpy.exe (no installation needed)

# Alternative CLI decompiler (cross-platform)
dotnet tool install --global ilspycmd

Note: The original dnSpy by 0xd4d is archived. Use dnSpyEx — the active community fork.

Quick Start