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Programs to transform source code into executable programs.
The Cray Compiling Environment (CCE) is a release of the Cray Fortran and Cray C compilers for use on x86-based Cray systems.
Chapel is an emerging parallel programming language being developed by Cray Inc. with the goal of improving programmer productivity.
The GNU Compiler Collection (GCC) includes front ends for C, C++, Objective-C, Fortran, Java, Ada, Go, and libraries for many more. GCC was originally written as the compiler for the GNU operating system. The GNU system was developed to be 100% free software, free in the sense that it respects the user’s freedom.
The Intel Compiler Suite, now marketed as "Intel Composer XE", is a collection of compilers from the Intel Corporation for building applications on GNU/Linux, Mac OS X, and Microsoft Windows.
The Portland Group (PGI) develops and sells high performance, production quality compilers and software development tools for the high performance parallel computing market.