Xerces-C++

The Apache XML parser for C++, Xerces-C+, supports a subset of the W3C XML Schema Recommendation.

Oracle XML Developer's Kit for C++

Oracle XML Schema Processor for C++ is now a component of Oracle XML Developer Kit for C++ (XDK for C++). Schema Processor for C++ allows the parsing of W3C XML Schemas, validation of XML instance documents against schemas and the retrieval of information about the document's data structure. It comes with a sample of document validation.

Oracle XML Developer's Kit for C

Oracle XML Schema Processor for C is now a component of Oracle XML Developer Kit for C (XDK for C). XML Schema Processor for C allows the parsing of W3C XML Schemas, validation of XML instance documents against schemas and the retrieval of information about the document's data structure. It comes with a sample of document validation.

Microsoft Visual C++ Toolkit 2003

The Microsoft Visual C++ Toolkit 2003 includes the core tools developers need to compile and link C++-based applications for Windows and the .NET Common Language Runtime.

TenDRA

TenDRA is a free, public domain C/C++ compiler and checker technology, developed by the Open Software Systems Group (OSSG) at DERA around its TDF/ANDF compiler intermediate format.

Compaq C Version 6.2

Compaq C for Linux Alpha is now available for immediate download upon acceptance of license terms and filling out an online registration form.

Open Watcom

Open Watcom is a joint effort between SciTech Software Inc, Sybase, and the Open Source development community to maintain and enhance the Sybase Watcom C/C++ and Fortran compiler products.

Cyclone

Cyclone is a programming language based on C that is designed to be safe, meaning that it rules out programs that have buffer overflows, dangling pointers, format string attacks, and so on. The Cyclone compiler and tools, as well as some benchmark programs, are freely available for download.

Ch C/C++ Interpreter

Ch is a powerful C/C++ interpreter. It supports classes in C++ and many new features in the latest C99 standard. The industry standard POSIX, X11/Motif, OpenGL, ODBC, XML and GTK+ are supported as well. Ch has built-in graphical support

Tiny C

A small C compiler for Linux.

CINT C/C++ Interpreter

CINT is a C/C++ interpreter which is aimed at processing C/C++ scripts.

Small Device C Compiler

SDCC is a freeware, optimizing ANSI C compiler. The current version targets the Intel 8051 and recently the Zilog Z80 based MCUs. SDCC can be re-targeted for other 8 bit MCUs or PICs.

Leonardo

A C Programming Environment for the Macintosh made specifically for learning the C language, visually debugging C programs, and creating algorithm animations in a declarative style.

Digital Mars

Digital Mars C and C++ Compilers for Win32, Win16, DOS32 and DOS.

MinGW32

MinGW is a collection of header files and import libraries that allow one to use GCC and produce native Windows32 programs that do not rely on any 3rd-party DLLs. The current set of tools include GNU Compiler Collection (GCC), GNU Binary Utilities

Cygwin

The Cygwin tools are ports of the popular GNU development tools and utilities for Windows 95 using the Cygwin library which provides a UNIX-like API on top of the Win32 API. With these tools installed, it is possible to write Win32 console or GUI applicate

DJGPP

A complete 32-bit C/C++ development system for Intel 80386 (and higher) PCs running DOS. DJGPP is a compiler and a set of tools that let you produce 32-bit protected-mode programs which run on MS-DOS/MS-Windows machines.

LCC-Win32

A Free C Compiler System For Windows 95/98 and NT.

Dev C++

Dev C++ is a development environment that comes with the free GCC compiler (MingW port) included and is a good compiler package for those programming on Windows-based computers. Dev-C++ can also be used in combination with Cygwin or any other GCC based compiler.

Pelles C

Pelles C for Windows is a complete development kit for Windows and Pocket PC. It contains among other things a optimizing compiler, a linker, a resource compiler, a message compiler, a make utility and install builders for both Windows and Pocket PC. It also contains a integrated development environment (IDE) with project management, debugger, source code editor and resource editors for dialogs, menus, string tables, accelerator tables, bitmaps, icons, cursors, animated cursors, animation videos (AVI's without sound), versions and XP manifests. The compiler is based on LCC, and the install builder for Windows is based on NSIS. Both are heavily modified.

Borland C++ Compiler 5.5

You will have to create a login ID, but it's a Free C++ compiler for Windows. It includes the latest ANSI/ISO C++ language support including the RTL, the STL framework with C++ template support. It runs from the command line and there is no built-in text

Microsoft Visual C++ Toolkit 2003

The Microsoft Visual C++ Toolkit 2003 includes the core tools developers need to compile and link C++-based applications for Windows and the .NET Common Language Runtime. Including: Microsoft C/C++ Optimizing Compiler and Linker; C Runtime Library and the C++ Standard Library; Microsoft .NET Framework Common Language Runtime; and sample code.

eMbedded Visual C++

Windows CE .NET includes embedded Visual C++ 4.0, a powerful development tool that offers considerable benefits to companies building native code applications for the next generation of Windows CE-based devices

GCC - the GNU Compiler Collection

GCC, the GNU Compiler Collection, includes front ends for C, C++, Objective-C, Fortran, Java, and Ada, as well as libraries for these languages (libstdc++, libgcj,...).

Intel C++ Compiler for Linux

Free evaluation copy can be downloaded for non-commercial uses.

z88dk - The z88 Development Kit

z88dk is a z80 C cross compiler supplied with an assembler/linker and a set of libraries implementing the C standard library for a number of different z80 based machines. z88dk is known to run on the following platforms: Amiga, BeOS, HP-UX 9, Linux, MacOS X, Solaris, Win32, Win16 and MSDOS. Binary releases are available for Amiga, Solaris and Win32.

HP-GCC - a C compiler for HP calculators

HP-GCC is a suite of programs that allow you to program ARM-based HP calculators in C. Being released under the GPL, it is free to use and modify. HP-GCC is a project aiming to make advanced programming in C easy.

Visual C++ 2005 Express

This is available for free until November 2006. You will have to download the Windows Platform SDK from the link at the bottom of the page to build native Windows applications.

OnBoard Suite

The OnBoard C compiler creates a Palm executable or (at the programmer's option) a Hackmaster hack. You can beam your new program or hotsync it to another Palm if you like. It requires nothing but a Palm (w/ the Palm OS in ROM so your code can take advantage of the library that's there). It does not need a separate run-time library.

Turbo C++

This is part of new line from Borland for students, hobbyists and non-professionals interested in NET and Windows programming. The free explorer version comes with a comiler, IDE and built in components but is not extensible. There is also a professional version, which is not free but is extensible. Free registration is required.

Introduction to Pro*C Embedded SQL

Embedded SQL is a method of combining the computing power of a high-level language like C/C++ and the database manipulation capabilities of SQL. It allows you to execute any SQL statement from an application program.

Mysql++ A C++ API for Mysql

MySQL++ Manual for using the Mysql++ C++ API includes examples and a tutorial. You can download the api from the download link at the top of the page. There is also a java driver and odbc connector on the download page.