Creo que tanto VC++ 7 (la version que viene con Visual Studio .NET 2003) como Intel C++ son 100% standard en cuanto a C++ (no con C99).
http://sourceforge.net/projects/mingw/
MinGW: import libraries and header files for use with GCC to build native Windows applications; now with added extentions to the MSVC runtime to support C99
functionality.