Jetbrains | Dotpeek

: You can use it to examine how Microsoft's own tools or third-party libraries are implemented. For instance, developers often use it to see the exact LDAP queries used by specific PowerShell cmdlets.

dotPeek is JetBrains’ free alternative to paid decompilers like .NET Reflector or open-source ones like dnSpy. It’s primarily a that decompiles .NET assemblies back to C#. jetbrains dotpeek