Free C, C++ Compilers and Interpreters
Turbo C++ Explorer New
Borland's TurboExplorer C++ Explorer Edition allows you to develop C++ applications for Windows using the Borland Turbo C++ compiler and IDE. The package boasts of integrated compilers, RAD visual designers, rich debugging features, Code Insight, templates, a history manager, a database explorer and connectivity, included Borland InterBase and MSDE, support for DCOM, ActiveX, .NET remoting, many pre-built components, etc. You have to register (free) to get the activation key.
Free Microsoft Visual C++ 2005 Express
Microsoft Visual C++ 2005 Express is currently available for download, free of charge, from Microsoft's site. It allows you to create programs for the .NET framework as well as native Win32 programs. It comes with an optimizing C++ compiler, linker, debugger, static libraries (including the Standard C++ Library and STL), the MSDN Express Library and Microsoft SQL Server 2005 Express Edition. If you wish to create native Win32 programs, you will need to download the Microsoft Windows Platform SDKseparately and install it. Like all the current versions of Microsoft software, it requires Windows 2000, XP, 2003, Vista (or their x64 versions). Note that unlike the commercial Visual Studio Professional 2005, it does not have 64-bit support, MFC, ATL, Win32 resource editor, macro assembler, source code control integration, etc.
Free Microsoft .NET Framework Software Development Kit (SDK) / Free Microsoft Visual C++ Compiler
The Microsoft Visual C/C++ command line compiler, along with C#, VB.NET and JScript.NET, is available from Microsoft for download for free. You will also need to download the Microsoft Windows Platform SDKwhich contains the Windows headers and libraries for the compilers. The command line compiler (at the time this was written/reviewed) does not have an optimizer (or at least, not the optimizer that ships with the Professional version).
Open Source Watcom / OpenWatcom C/C++ Compiler
The Watcom C/C++ compiler (now OpenWatcom C/C++ compiler) is now open source and free. This compiler, which generates code for Win32, Windows 3.1 (Win16), OS/2, Netware NLM, MSDOS (16 bit and 32 bit protected mode), etc, was a highly coveted compiler some years back (until Sybase terminated it). The compiler also includes the rather well-known STLport (a C++ Standard Template Library implementation).
Intel C++ Compiler for Linux Non-Commercial Version
The Intel C++ compiler has a non-commercial version for Linux which you may use to develop your programs for non-commercial purposes (read their licence for more information). The optimizing ANSI C/C++ compiler supports all Intel 32 bit processors and the 64 bit Itanium processor.
Apple's Macintosh Programmer's Workshop (C and C++ compilers)
Yep, you're right. This is Apple's own Macintosh Programmer's Workshop. The C/C++ compilers, debuggers, tools, etc, in this workshop are all downloadable from their web site, free! They're the same those you get from their Developer CD. Full documentation about the compilers as well as documentation about programming for the Macintosh in general can be found online. You get the SC/SCpp (68k), which are ANSI compliant C and C++ compilers that generates 680x0 code; as well as MrC/MrCpp which generates C/C++ code for the PowerPC. You also get two assemblers (one for the 68k and one for the PowerPC), the shell, linkers, a Make tool, resource manipulation and analysis tools, file comparison tools, editor, three debuggers, etc. If you want to be on the cutting edge, you can also download the absolutely latest compilers which are still under testing (but having the latest bug fixes and C++ support). CodeWarrior plugin compilers appear to be available from the site as well. (Note - this tool set is for Mac OS 7.X/8.X/9.X program development.)
Digital Mars C/C++ Compiler (Symantec C++ Replacement)
Digital Mars C/C++ is a drop-in replacement for the Symantec C++ compiler, with support for compiling programs for Win32, Windows 3.1, MSDOS, and 32-bit extended MSDOS. If the target machine does not have a floating point processor (pre-Pentium machines), you can link the floating point emulation into your program. The compiler supports the C++ definition found in The Annotated C++ Reference Manual (ARM) and the enhanced language features of AT&T version 3.0, including templates, nested classes, nested types, exception handling, and runtime type identification.
UPS Debugger (C Interpreter)
This is actually a graphical source level debugger for X Windows, but it contains a built in C interpreter which can handle single or multiple source files. You can use it to build a byte-code executable and execute the interpreter on that executable. If you need an interpreter to debug or prototype programs, or to just learn the language, check this out. It supports the following platforms: Solaris, SunOS, Linux, FreeBSD, BSD/OS, and possibly other Unices.
The BDS C Compiler
Remember the old (famous) BDS C compiler for 8080/Z80 CP/M systems? It is now in the public domain, complete with assembly language source code. The package is the retail version of the compiler, with a linker and user manual. Before you scoff at this, remember that it can be used to generate 8080/8085/Z80 code for embedded systems with a little bit of work (ie, write your own routines to replace any runtime library code that access the operating system functions).
Bloodshed Dev-C++ C++ Compiler
This is a Win32 integrated development environment that includes the egcs C++ compiler and GNU debugger from the Mingw32 environment together with an editor and other facilities to make program development using the Mingw32 gcc compiler easier on a Windows platform. It also includes an installer for your applications.
DeSmet C
DeSmet C will be familiar to those who programmed in C in the 1980s. It is an MSDOS C compiler. It has been released under the GNU GPL, and comes with manuals, an editor, and a third party optimizer.
Sun Studio Compilers and Tools
Sun Studio Compilers and Tools for Linux and Solaris OS on Sparc and x86/x64 platforms includes command line tools as well as a NetBeans-based IDE for developing, compiling and debugging C, C++ and Fortran programs. It also includes performance analysis tools. You have to join the Sun Developer Network (SDN) to get access to the free compilers. As far as I can tell, joining the SDN is free.
OnBoard Suite
The OnBoard Suite creates executables (or, if you wish, a Hackmaster hack) for the Palm PDA. It includes a C compiler, assembler, programmer's editor and a Palm-to-host porting tool. The Suite runs directly on PalmOS, on the Palm handheld.
Open64 Compiler Tools
Open64 comprises optimizing compilers for C, C++, and Fortran 90/95 for Intel Itanium systems running Linux. The compiler is the successor to the SGI Pro64 compiler suite, now released under the GNU GPL.
HP-GCC
HP-GCC comprises the GNU C compiler targeted at the ARM processor of ARM-based HP calculators (like the HP49g+), HP specific libraries, a tool (ELF2HP) that converts the gcc produced binary to the appropriate format for the HP calculator, and an emulator (ARM Toolbox/ARM Launcher) that lets you execute ARM programs on your computer. At present, Windows and Linux versions are available.
z88dk - The z88 Development Kit
z88dk is a z80 C cross compiler based on the Small C compiler, supporting many features of ANSI C. It comes with an assembler and linker as well as a standard C library. Supported host systems include Amiga, BeOS, HP-UX 9, Linux, BSD systems, MacOS X, Solaris, Win32, Win16 and MSDOS. The compiler generates code for the following target systems: Cambridge Computers z88, Sinclair ZX Spectrum, Sinclair ZX81, CP/M based machines, Amstrad NC100, VZ200/300, Sharp MZ series, TI calculators (TI82, TI83, TI83+, TI85, TI86), ABC80, Jupiter Ace, Xircom REX 6000, Sam Coupe, MSX1,Spectravideo, Mattel Aquarius, Peters Sprinter, and C128 (in z80 mode).
Cyclone C
Cyclone C is not strictly an ANSI C compiler but a compiler of a "safe dialect" of C. It enforces type safety, has a variety of checks to protect against buffer overflows, array-bound violations, etc. It currently works on Linux and Windows (the latter via Cygwin), and requires you to have the GNU compiler tools on your system (see elsewhere on this page).
TenDRA C/C++ Compiler
TenDRA is a free C/C++ compiler and source code checker (like lint) that runs on a variety of Unix systems like AIX, HP-UX, Linux, Irix, OSF1, SCO, Solaris, SunOS, Ultrix, and Unixware. You can use it to replace your system C compiler, or use it as a lint-like utility to check your source code for correctness and potential bugs. The compiler comes bundled with sid, an LL(1) parser generator.
Tiny C Compiler - Smallest Linux C Compiler
This small Linux C compiler generates optimized x86 native binaries. It purportedly compiles, assembles and links several times faster than GCC. The compiler is currently moving towards ISO C99 compliance. It also includes an optional bounds checker. It also handles C script files (just add the shebang line #!/usr/local/bin/tcc to the first line of your C source code file to have it executed directly. TCC is distributed under the GNU General Public License.
Portable Object Compiler
This is a set of Objective C class libraries and a compiler that translates your Objective C code to plain C code. It works on Windows, Linux, OS/2, Macintosh, etc.
Mingw32 C & C++ Compilers
This system comes with the GNU C/C++ compiler, which you can use to generate Win32 executables. It has its own
which is in the public domain. Applications generated using this system are supposed to be faster than those generated by the Cygwin32 system (see elsewhere on this page), and they are free from the encumberances of the GNU license. Like other systems based on the GNU tools, Mingw32 comes with complete with various programming tools, such as a program maintainence program (ie, make), text processing tools (sed, grep), lexical analyser generator (flex), parser generator (bison), etc. It also comes with a resource compiler, allowing you to compile your Windows resources.
GNU C/C++ Compiler and EGCS
This is the GNU C compiler page, from which you can get links to binaries and source code for the GNU C Compiler. Note that the EGCS compiler is now the new GNU C compiler, and the sources for both compilers will eventually be merged. You can also use our links on this page for the most commonly requested binary versions (MSDOS and Win32).
Pelles C Compiler
This is another Windows-hosted C compiler that is based on LCC (see also LCC-Win32 elsewhere on this page). It contains a C compiler, linker, resource compiler, message compiler, a make utility, etc. It compiles code for both Windows and Pocket PC.
Compaq C Compiler
Linux/Alpha users can now download and use Compaq's optimising C compiler freely by simply filling a form and agreeing to their license agreement. The compiler may be used to generate any sort of program, commercial or otherwise. The compiler includes a math library and a debugger (ladebug) ported from True64 Unix. It comes with the usual man pages as well as a Language Reference Manual and a Programmer's Guide.
Ch Embeddable C/C++ Interpreter (Standard Edition)
Ch is a C/C++ interpreter that supports the ISO 1990 C Standard (C90), major features in C99 (complex numbers, variable length arrays or VLAs, type generic functions, long long data type, etc), classes in C++, and extensions to the C language like nested functions, string type, etc. It can be embedded in other applications and hardware and used as a scripting language. Your C/C++ code is interpreted directly with no compilation to intermediate code. Since it supports Linux, Windows, MacOS X, Solaris and HP-UX, it means that your code should be portable to any of those platforms once you write it for this compiler. The standard edition is free for personal, academic and commercial use. You need to register to download the package.
DJGPP C and C++ Compilers
This is a development system based on the well-known GNU C/C++ compiler. It generates 32 bit MSDOS executables that is Windows 95 long-filename-aware. It is a very complete system with IDEs, graphics libraries, lexical analyser generators (flex), parser generators (bison), text processing utilities (like grep, sed), a program maintainence utility (ie, make), a dos extender, and so on. The compiler, utilities and libraries come with source code.
Reads51 Small C Cross-Compiler
Version 2.0 of Reads51 comes with an assembler that runs under Windows 3.1 to generate 8051 code. It comes with an IDE, editor, debugger, and monitor. Version 4.10 includes a Small C compatible 8051 compiler, a relative assembler, a linking locator (loader), an editor, a chip simulator, an assembly language debugger and a monitor. This version runs under Windows 95, 98 and NT. With these tools, you can write, compile, assemble, debug, download and run application software (including embedded control software) in the MCS-51 language. It comes with an online help system. If you do not buy their board, you may only use the software for non-commercial home and educational purposes.
Cilk ANSI C Based Compiler
Cilk is an ANSI C-based language that can be used for multi-threaded parallel programming. It "is especially effective for exploiting dynamic, highly asynchronous parallelism in data-parallel or message-passing style". Their website mentions that Cilk has already been used to develop three world-class chess programs, StarTech, Socrates and Cilkchess.
ANYC C Compiler
AnyC is a retargetable C compiler released under the GNU GPL. It is intended for use with 8 bit microprocessors, particularly 8 bit RISC microcontrollers. The original target is the Microchip PIC 16C5X family of 8 bit RISC microcontrollers.
Sphinx C-- Compiler
This MSDOS compiler is a sort of hybrid C compiler and assembler that allows you to "create programs with the power and readability of C while retaining the efficiency of assembly language." It can produce MSDOS executables or .OBJ files which you can use in conjunction with other linkers to generate an executable. The above link leads to the source code and documentation for the compiler. If you want a precompiled binary, you can get it from the Unofficial Sphinx C-- Compiler site.
LSI C-86 C Compiler
The website for this compiler is written in Japanese which unfortunately is not displayed correctly in my browser (I don't have the necessary fonts), so I'm not able to comment for certain about this compiler. It looks like a cross-compiler that allows you to generate ROMable code. An older version (3.30c) of the compiler appears to be free. The free version runs on MSDOS only.
ACC C Compiler
This is an MSDOS compiler that handles a subset of the C language with some extensions (eg the #asm directive for inline assembler). Floating point is not supported. It generates protected mode 32 bit assembler code, which you will have to assemble and link using the supplied A86 assembler and linker. A copy of the DOS extender will also be embedded into your application.
CINT C and C++ Interpreter
This is a C/C++ interpreter that comes with source code. It can be compiled and used on a large variety of Unices, including HP-UX, Solaris, SunOS, AIX, Alpha/OSF, FreeBSD and Linux, as well as Windows NT. You can even issue system calls from the interpreter (such as Posix calls on Unix or Windows API calls from Windows). It accepts most of K&R and ANSI C and is close to the standard C++ (at the time of this writing). As with all interpreters, it may be useful in debugging programs or learning the language.
SDCC C Cross-compiler
This is a C cross-compiler that targets the Intel 8051, Maxim 80DS390 and the Zilog Z80 based MCUs. It can also be retargetted for other 8 bit MCUs or PICs. It comes with a retargetable assembler and linker, a source level debugger and a simulator, and it is capable of a variety of optimisations. Source code for the compiler is available under GPL. Host platforms supported include Linux, Windows, Mac OS X, Alpha, Sparc, etc.
CC386 C Compiler
This is a 32-bit MSDOS ANSI C compiler that comes with a runtime library, linker, rudimentary debugger, DOS extender and a make utility. Source code is also available.
CC65 C Cross-Compiler
A cross-compiler for the 6502 that is a derivative of the Small C compiler. It runs on Win32, DOS, Linux and OS/2. It generates binaries for the Commodore C64, C128, C16, C116, Plus/4, and the 600/700 family of compilers. You can also use an emulator (linked from their web page) to emulate many different CBM machines from Linux.
Cygwin Project (C & C++ Compilers)
This "project" includes a commercial quality compiler (GNU C/C++) that generates Win32 GUI and console applications. I have not used this port myself, but based on what I read, it appears that they have their own and so on. Source code for the compiler, libraries and tools are provided. Note that the default option in this package forces you to distribute your source code if you compile and link with their libraries. There is also a special option that you can invoke which will cause it to link with alternative libraries, allowing you to distribute your applications without sources. It appears that the free version has not been updated for some time now.
LCC-Win32 C Compiler
This is a C compiler that generates Win32 GUI and console applications. It comes with its own linker, IDE, debugger, resource editor and resource compiler. LCC-Win32 is based on the LCC compiler (see elsewhere on this page).
LCC - A Retargetable Compiler for ANSI C
LCC is a C compiler (source code only) that generates code for the Alpha, Sparc, MIPS R3000 and Intel x86. There is also a book A Retargetable C Compiler written by the authors of the compiler that explains the code of the C compiler. This compiler is the basis of at least 2 other Win32 C compilers (also listed on this page).
Pacific C Compiler
This is a MSDOS C compiler that comes with a development environment. You can distribute programs compiled with the compiler freely.
ATTOC C Compiler
A MSDOS based C compiler that generates assembly language files. You can use either MASM or TASM to assemble the generated file. I'm not sure if there are any libraries or headers included (you have to check it out yourself).
Leonardo IDE
Leonardo IDE is a Macintosh-based IDE, compiler and debugger for C programs. The Windows and Linux ports are said to be under development. It has a syntax highlighting editor, an ANSI C compiler, a compiler for the ALPHA visualization language, a graph editor, a reversible virtual CPU, etc. Note that the programs are not compiled to native code but to code to be executed for the virtual CPU. The virtual machine and debugger allows you to execute code forwards and backwards and supports multitasking. The IDE comes with animated algorithms, plus example source code for games like Tetris, Checkers, etc. The IDE is useful for checking and debugging your source code, search for memory leaks, etc. Update: this project has been discontinued.
Download
http://www.thefreecountry.com/compilers/cpp.shtml
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http://www.acms.arizona.edu/education/opti_583x/sample_code/downloadTC.html
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his page is divided into 4 sections (some may be added in future).
1°)Free compilers (with source code)
2°)Compiler construction toolkits
3°)Tutorials and articles
4°)Links to compiler-related sites
1°)Free compilers
Here is the free compilers list. If you want to add a new one to this list, click here.
Turbo Pascal and Turbo C: Borland has released for free version 1.0, 3.2 and 5.5 of its famous Turbo Pascal.
Dev-Pascal : Free IDE and compiler for Pascal (with Free Pascal).
Dev-C++ : Free IDE and compiler for the C and C++ languages. Delphi and C source code available.
SmallC : Small C compiler written by J. E. Hendrix. C source code included.
BCX : Very powerful and easy to use system which generates C code capable of compiling under Lcc-Win32 and MingW32 (or Dev-C++) without any modification. It also comes with a resource translator which can read MS resource's code and produce code in C (Win32).
CoPascal : Co-Pascal is an extension of the Pascal-S compiler developed by N. Wirth. Pascal source code included.
P32 : Pascal compiler. Currently in development but works great. Pascal source included.
PowerPascal : Power Pascal is a fully 32-bit, native Pascal compiler for OS/2 2.0 or better. Pascal source included.
Djgpp : THE free compiler for c, c++, forth, pascal and more including C sources.
TinyPascal : A small implementation of the Pascal language. Full Delphi sources included.
Free Pascal : 32-bit Pascal compiler for Dos, Linux, OS/2. Pascal source code included. Used in Dev-Pascal.
ScriptBasic : Free embeddable and extendable scripting basic interpreter with full C source code. Tested on Windows NT and on Linux.
LCC-Win32 : a free compiler system for Windows by Jacob Navia.
lcc : lcc is a retargetable compiler for ISO Standard C. It generates code for the ALPHA, SPARC, MIPS R3000, and Intel x86 and its successors.
Yabasic : Small basic interpreter (with source code for Visual C++ 6) for Windows and Linux
Pacific C for DOS : Freeware version for MSDOS of a professional C IDE/compiler shareware
TopLogo++ : This is an IDE/compiler tool for developers and scientists. The package includes full documentation, Compiler IDE, demos, help etc...
JavaTM 2 SDK : JavaTM Software Development Kits and Runtimes
XBasic : interactive program development environment, advanced 32-bit/64-bit BASIC, interactive graphical GuiDesigner, multi-platform portable source code, Windows95 - Windows98 - WindowsNT - Linux - UNIX
XSCompiler : This MSDOS compiler generates 32-bit protected mode programs from a language that is C compatible, but includes classes and multiple inheritance. It comes with the standard C library, graphics, sound, multitasking, compression, animation, GIF, PCX, FLI/FLC, and other libraries. The compiler itself is compiled using this language.
GNAT : GNAT is an Ada95 compiler with the source code available in Ada95.
Rapid-Q : Rapid-Q is a free IDE and BASIC op-code compiler system for Win32, Linux, Unix... It is very easy to use and to integrate with many other goodies like mySQL, cgi, DirectX, Direct3D, GTK ...
Mingw : A very good Win32 port of the GNU GCC compiler (used in Dev-C++)
Cygwin : Another free and good Win32 port of GCC and GNU Utils
GCC : THE one and only GCC compiler system. Runs on nearly any system.
Phoenix/Envelop : Rapid Development under Basic.
B++ : B++ is a BASIC compiler built on top of C++ - it converts BASIC code to C++, and then calls C++ compiler to produce EXE (or DLL). Source code is in Free Pascal.
GNU Ada : Free ADA compiler.
Dev86 / BCC : x86 C/Assembler development tools (C compiler, assembler, linker). Under the GPL. Linux and DOS binary distributions available.
http://www.digitalmars.com : FREE C/C++ Compiler for DOS, Win & NT by theauthor of Zortech C++ .
Virtual Pascal : A tool of choice for 32-bit cross-platform development using the Pascal language. It is compatibile with Borland Pascal and Delphi, including the Run-Time Library (RTL), an optimizing compiler, a powerful integrated debugger, and comprehensive online documentation.
PlugSys Xbase compiler : PlugSys has a free edition and a Professional edition on their web site. It is a character based compiler for the Xbase(dbase, clipper) language. There are both DOSWin95/98/NT and Linux version. Same code compiles on either system. Also has a server page tool (free and pay versions). The documentation that comes with the download is great. Free version only requires registration to download.
Context programming language : Simple programming language and compiler for MS-DOS with sources and sample programs on it's own input language by Andrei V. Khokhlov
Babya : B++ compiler for DOS with setup and Windows 9x support.
OpenWatcom : Open Watcom is a joint effort between SciTech Software, Sybase®, and a select team of developers, which will bring the Sybase Watcom C/C++ and Fortran compiler products to the Open Source community.
Self : A port of a compiler for the Self programming language to Linux. The system was originally developed at Stanford University and Sun, and it forms the technological base of the Java Hotspot compiler. A nice GUI is included.
SmallEiffel : The GNU compiler for the Eiffel language. Requires an ANSI C compiler. Supports AIX, Amiga, BeOS, BSD, Cygwin, MSDOS, FreeBSD, GNU/Hurd, GNU/Linux, HP-UX, IRIX, MacOS, NetBSD, NeXT, OS/2, OSF1, QNX, SCO, Solaris, OpenVMS, Windows 95/98/NT/2K and XENIX.
Inno Pascal : Inno Pascal is a simple Pascal compiler for Win32. It produces compact, native-code x86 executables without requiring any external assemblers or linkers. It was written entirely from scratch; it is not based on any other existing compilers. Full source code is included under the GPL license.
Harbour Project : Harbour is an Open Source Clipper Compatible Compiler. It includes OO extentions, and lots of useful adds. The Licence is GNU+Harbour Exception, what means that the licence does not infects the programs you produce with the compiler.
2°)Compilers construction toolkits
Here is the compilers construction toolkit list. If you want to add a new one to this list, click here.
Bison and Flex : Yacc and Lex clones. Creates parsers and scanners for compilers.
TPYacc and TPLex : Port of the Yacc and Lex tools to Turbo Pascal. This tools creates parsers and lexical scanners for compilers.
Coco/R : Coco/R combines the functionality of the well-known UNIX tools lex and yacc, to form an extremely easy to use
compiler generator that generates recursive descent parsers. Available versions ( Oberon, Modula-2, Pascal, Delphi, C and Java) for more info see http://cs.ru.ac.za/homes/cspt/cocor.htm
antlr : another tool for language recognition Tool written in Java for generating recognizers in Java or C++. No money required for use, but download requires online registration for authors tracking purposes. Runs with SUN Java SDK.
Delphi Compiler Generator : Runs on Win32 only, written in Delphi, source code included. Free (as in "free beer", not "free speech") for non commercial use
GENTLE Compiler Construction System : This compiler construction tool purports to provide a uniform framework for language recognition, definition of abstract syntax trees, construction of tree walkers based on pattern recognition, smart traversal, simple unparsing for source to source translation and optimal code selection for microprocessors. Note however that if you use it to create an application, the licensing terms require that your applications be licensed under the GNU GPL.
Jacc : Jacc is a general-purpose parser generator that given a LALR(1) context-free grammar generates the source(s) of a C++ class that implements a parser for the language defined by the grammar. Jacc has a robust and powerful semantic value type system that allows the user to benefit by the OO language environment. Another innovative feature is its customizable code generating back end - the Jamp macro processor which generates the final sources based on a template file and attributes defined in the jacc grammar file. This way the user has better control to the style and structure of the generated code.
3°)Tutorials and articles
Here is the tutorials and articles about compiler writing. If you want to add a new one to this list, click here.
Let's build a compiler : A very good tutorial on writing a simple compiler in 16 articles. By Jack W. Crenshaw.
Parsing techniques : Free book to download in postscript or pdf about parsing techniques.
4°)Links to compilers related sites
Compilers.net : Directory and search machine on compilers and programming languages
Free compilers list : Lots of links about compilers and construction tools. One of the best !
The comp.compilers archive : Archive of the comp.compilers newsgroup.
http://www.dunfield.com/downloads.htm : "C" compiler and related files
Free BASIC translators : Free BASIC Translators Home Page
The Free Country - Developer City : Free programming resources including compilers.
Free developer resources : List of free developer resources like: compilers, setup programs, patch makers, and more.
DevLibrary : Huge programming web site with hundreds of tutorials and files on several languages.
http://cspt1.cs.ru.ac.za/compilers/ : An introduction in C++ to Compilers and Compiler Generators.
http://www.dreamwater.org/jamesfox/fciwin.html : An index to many free compilers and interpreters for Windows.
http://www.scriptol.org : List of programming languages and resources: free compilers, IDEs, etc....
http://www.bloodshed.net/compilers/index.html