Compilers
They speak opcode
Some of these compilers are part of a IDE. Year is the year of the latest stable release. C++ compiler support
GCC 8.2 - 2018
Clang/LLVM 7.0 - 2018
Xcode 10.1 - 2018
Visual C++ 2017 - 2017
Vbcc - 2014
Open Watcom 2.0 - 2015