An incomplete list of C++ compilers

Apple C++. It also comes with OS X on the developer tools CD.

Bloodshed Dev-C++. A GCC-based (Mingw) IDE.

Borland C++

Cygwin (GNU C++)

Digital Mars C++

MINGW - "Minimalist GNU for Windows". Another GCC version for Windows including a free (non-GPL) w32api.

DJ Delorie's C++ development system for DOS/Windows (GNU C++)

GNU CC source

IBM C++ for IBM power, System Z, Bluegene, and Cell.

Intel C++ for linux

The LLVM Compiler Infrastructure (based on GCC).

Microsoft Visual C++ 2008 Express edition.

Sun Studio.

Some compilers that require payment (some allow free downloads for trial periods):

Borland C++

CodeWarrior C++ (formerly Metrowerks), it comes for many platforms.

Comeau C++ for many platforms

Edison Design Group C++ Front End - used by many C++ compiler suppliers

Green Hills C++ for many embedded systems platforms

HP C++ for Unix and HP C++ for OpenVMS.

Intel C++ for Windows, Linux, and some embedded systems.

Mentor Graphics/Microtec Research C++ for many embedded systems platforms

Microsoft C++

Paradigm C++, for x86 embedded systems

The Portland Group C++ (parallization for Pentiums)

SGI C++, optimizing compiler

Sun C++

WindRiver's Diab C++ used in many embedded systems.

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