Collection of free/opensource .NET tools

Dotpeek

https://www.jetbrains.com/decompiler/
Free .NET decompiler provided by JetBrains.

ILSpy

https://github.com/icsharpcode/ILSpy
Open source .net decompiler.

Reflexil

https://github.com/sailro/Reflexil
The .NET Assembly Editor, provides plugin for ILSpy and Reflector.

Simple Assembly Explorer

https://github.com/wickyhu/simple-assembly-explorer
If you want to edit IL, this one is easier to use than ILSpy + Reflexil.

de4dot

https://github.com/0xd4d/de4dot
.NET deobfuscator and unpacker.

Collection of free/opensource .NET tools by @sskaje: https://sskaje.me/2016/05/collection-freeopensource-net-tools/

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