C++ CompilersC++ CompilersC++ Compilers

GNU g++	Windows 10: WSL (Windows Subsystem for Linux) Windows: MinGW-w64 project or STL's MinGW distro
LLVM clang++	download page
Microsoft Visual C++	Only newer versions are largely conforming to the modern ISO C++ standard(s).
Intel ICC
NVIDIA PGI
Embarcadero C++ Compiler	bundled with C++Builder
Oracle C++ Compiler	bundled with Oracle Developer Studio
IBM XL C++

Web Compilers

Compiler Explorer	lets you run code through many different compilers shows nicely annotated assembly output lots of compilers with lots of different versions, also with experimental features offers several popular libraries great text editor with multiple cursors, VIM mode, dark mode, …
Wandbox	gcc clang C++03 - C++2a Boost
C++ shell	gcc 4.9 Boost 1.55 C++03 - 14
IDEone	C++14