.NET Reflector AlternativesDecompilers and other similar apps like.NET Reflector

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

dnSpy is a debugger and .NET assembly editor. You can use it to edit and debug assemblies even if you don't have any source code available.

dnSpyEx is an unofficial continuation of the dnSpy project which is a debugger and .NET assembly editor. You can use it to edit and debug assemblies even if you don't have any source code available. Main features:

What's Cool about dotPeek? Decompiling .NET 1.0-4.0 assemblies to C# Quick jump to a specific type, assembly, symbol, or type member Effortless navigation to symbol declarations, implementations, derived and base symbols, and more Accurate search for symbol usages with advanc.

Created by Daniel Pistelli, a freeware suite of tools including a PE editor called CFF Explorer and a process viewer. The PE editor has full support for PE32/64. Special fields description and modification (.

Zeta Resource Editor is a free application that enables you to edit standard Microsoft .NET string resources from multiple different resource files together inside one single data grid.

CFR will decompile modern Java features - Java 8 lambdas (pre and post Java beta 103 changes), Java 7 String switches etc, but is written entirely in Java 6. [ http://www.benf.org/other/cfr/ ].

 The MSIL Disassembler is a companion tool to the MSIL Assembler (Ilasm.exe). Ildasm.exe takes a portable executable (PE) file that contains Microsoft intermediate language (MSIL) code and creates a text file suitable as input to Ilasm.exe.

GrayWolf is a .NET Decompiler that can edit the IL of a compiled .NET application. This Decompiler is targeted at hacking compiled .NET applications. This is a Beta product the IL editing is lacking and the deobfuscator is just getting going.