C++ Builder
   Provides a visual development environment for building Web and database applications for the Microsoft Windows platform.
   http://www.codegear.com/Default.aspx?tabid=123

C++ Conformance Roundup
   This roundup is designed to report which compiler and library implementations support the standard well. (compiled and edited by Herb Sutter)
   http://www.ddj.com/dept/cpp/184401381

Comeau Computing C/C++ Compilers
   Command line driven C and C++ compiler that generates platform specific and C compiler specific C as its object code. Includes almost all of the language features that the ANSI/ISO C++ committee agreed upon for Standard C++.
   http://www.comeaucomputing.com/

Digital Mars C and C++ Compilers
   Successor of Symantec C++ with support for Win32, Win16, DOS16, and DOS32. Command-line compiler is freely available.
   http://www.digitalmars.com/

Free C/C++ Compilers
   Lists free C and C++ compilers, cross-compilers and interpreters for a wide variety of operating systems (including embedded systems).
   http://www.thefreecountry.com/compilers/cpp.shtml

Green Hills Optimizing C++/EC++ Compilers
   A "Scalable C++" compiler that includes a variety of user-selectable language feature combinations to meet specific needs. The C++ Compilers conform to the ANSI/ISO C++ standard. Ranging from bare-bones C up through full-blown ANSI C++, Green Hi
   http://www.ghs.com/products/optimizingC++EC++Compilers.html

HP aC++
   The HP C/aC++ Developer’s Bundle provides the tools for compiling, linking, and debugging C and C++ programs on HP-UX 11i (v1 and v2) on the HP Integrity and HP 9000 systems.
   http://h21007.www2.hp.com/dspp/tech/tech_TechSoftwareDetailPage_IDX/1,1703,1740,00.html

Intel C++ Compilers
   Optimizing compiler for Intels 32-bit and 64-bit processors. Produces executables that are source and object code compatible with Microsoft Visual C++. For Linux and Windows. Also Fortran and EFI byte code compilers.
   http://www.intel.com/software/products/compilers/

LLVM Compiler Infrastructure
   An aggressive open-source compiler for C and C++. It specializes in interprocedural optimization/analysis and supports runtime and offline optimization "in the field" as well.
   http://llvm.org

MCPP
   A portable C/C++ preprocessor supporting several compiler-systems on UNIX and DOS/Windows. MCPP supports C99 and C++98 as well as C90. Also provides a validation suite which tests the C/C++ preprocessor comprehensively.
   http://mcpp.sourceforge.net/

MN Watcom Page
   Watcom news, links, tips, STL, FAQ. wxWindows with Watcom.
   http://howlingmad.gmxhome.de/

Open Watcom
   Open Source project to maintain and enhance the Watcom C, C++ and Fortran Compilers.
   http://www.openwatcom.org/

Paradigm C++ Professional
   Software development suite for x86 embedded systems programming, including the Paradigm C++ Professional Integrated Development Environment (IDE).
   http://www.devtools.com/

SGI Pro64
   A suite of optimizing compiler development tools for Linux Intel Itanium systems. Conforms to the IA-64 Linux ABI and API standards.
   http://oss.sgi.com/projects/Pro64/

Sun Studio C/C++/Fortran Compilers
   Resources for developers using C, C++, or Fortran.
   http://developers.sun.com/sunstudio/

Turbo C++ Explorer
   A C++ Rapid Application Development environment for the native Win32 platform. Features fast compile times, powerful debugging, and a highly productive IDE.
   http://www.turboexplorer.com/cpp

Web-based C++ Compile System
   Free online interface to a C++ compiler. (created by Don Retzlaff and Tom Irby)
   http://www.cs.unt.edu/~irby/wbcRoden/wbcHome.html

Win32 C/C++ Compilers
   List of free and commercial compilers for 32-bit Windows applications.
   http://www.willus.com/ccomp.shtml

wxMSW Compiler Comparison
   Compares compile times and final file sizes of wxMSW compiled with Borland C++ 5.5, Open Watcom 1.0, Gcc 3.2, Visual C++ 6, and Digital Mars.
   http://biolpc22.york.ac.uk/wx/wxhatch/wxMSW_Compiler_choice.html