TotalReflection is the troubleshooting tool for executable files. You can view, the internal structures of PE files. It makes it easy to analyze contents of any Windows base module. It suports .NET applications, its immediate capability to read contents of managed applications, allows you to investigate which assemblies needed to load particular module and provides complete information about executable module which holds it. Now, you can investigate if your application is a clear managed application and if it does not require any unmanaged modules to run, and also it provides you with the information what unmanaged functions your application directly or indirectly calls.