A Small C Compiler.

Compile and execute C "scripts" in one go! [MIT]

A C compiler for LLVM. Supports C++11/14/1z C11. Developed by LLVM Team. [NCSA]

GNU Compiler Collection. Supports C++11/14/1z C11 and OpenMP. [GNU GPL3]

A very old C compiler. Supports C99.

Developed by AMD.

Developed by Intel.

Collection of modular and reusable compiler and toolchain technologies.

MSVC, developed by Microsoft.

Watcom C, C++, and Fortran cross compilers and tools. [Sybase Open Watcom Public License]

C, C++ and Fortran compiler for SPARC and x86. Supports C++11. Available on Linux and Solaris. [OTN Developer License]

Tiny C Compiler. [LGPL]