A native Windows port of the GNU Compiler Collection (GCC)
MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.
Proteus Cross Compiler system allows the generation and compilation of Java Code from llvm-gcc compatible languages (C/C++/fortran). The generated code will execute at up to 50% of native code.