Debug third-party code, even if you don't have the source. NET Reflector Pro provides the latest version of .NET Reflector, plus a Visual Studio add-in containing the Pro features .NET Reflector Pro integrates .NET Reflector into Visual Studio to allow you to seamlessly debug into third-party code and assemblies, even if you don't have the source code for them. For example, you may have a project that contains a third-party assembly, but you cannot step into it because you do not have the source code, symbols, or PDB file. After you have installed .NET Reflector Pro, you can use the Visual Studio add-in to select and decompile the assembly that you are interested in.