Browse free open source Compilers and projects for Windows below. Use the toggles on the left to filter open source Compilers by OS, license, language, programming language, and project status.

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  • 1
    Free Pascal Compiler

    Free Pascal Compiler

    Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler

    A 32/64/16-bit Pascal compiler for Win32/64/CE, Linux, Mac OS X/iOS, Android, FreeBSD, OS/2, Game Boy Advance, Nintendo NDS and DOS; semantically compatible with Delphi, Borland Pascal and Mac Pascal (partially) with extra features, e.g. operator overloading.
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    Downloads: 4,018 This Week
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  • 2
    Dev-C++ for Windows 10/8/7

    Dev-C++ for Windows 10/8/7

    A fast, portable, simple, and free C/C++ IDE

    Coding Boot Camp Learning to program? Check out the free boot camp from Embarcadero which runs from Monday, August 22nd to Friday, August 26th. https://learndelphi.org/boot-camp-2022/ Embarcadero Dev-C++ is a new and improved fork (sponsored by Embarcadero) of Bloodshed Dev-C++ and Orwell Dev-C++. It is a full-featured Integrated Development Environment (IDE) and code editor for the C/C++ programming language. It uses Mingw port of GCC (GNU Compiler Collection) as its compiler. Embarcadero Dev-C++ can also be used in combination with Cygwin or any other GCC based compiler. Embarcadero Dev-C++ is built using the latest version of Embarcadero Delphi. Embarcadero Dev-C++ has a low memory footprint because it is a native Windows application and does not use Electron. Optimized for parallel compilation on modern multi-core machines. GitHub Project: https://github.com/Embarcadero/Dev-Cpp/ Sponsored by Embarcadero: https://www.embarcadero.com/free-tools/dev-cpp
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    Downloads: 3,361 This Week
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  • 3
    CLISP - an ANSI Common Lisp
    CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
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    Downloads: 288 This Week
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  • 4
    Jad Java decompiler plugin for Eclipse IDE.
    Downloads: 29 This Week
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  • 5
    ANS Forth for Win32 and Linux/x86 (used to compile the following SF projects: acWEB, acFTP, acFreeProxy, acSMTP, Forth-Script)
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    Downloads: 28 This Week
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  • 6
    EiffelStudio
    EiffelStudio is an Integrated Development Environment (IDE) that provides comprehensive facilities to programmers. It offers a comprehensive suite of tools that enable programmers to produce correct, reliable, and maintainable software while keeping control of the development process. If you want to create fast, robust, scalable applications, then EiffelStudio™ will offer you a cost-effective solution. Imagine being able to model your system as you think – capturing your requirements and your thought processes with EiffelStudio. When ready to design, you build upon the model you just created, still with EiffelStudio. Then you implement with EiffelStudio. You never need to throw anything out and start over. You don’t need extra tools to go back and safely make changes in your architecture. Roundtrip engineering? It’s built in by design. Testing, metrics and productivity tools? They’re built in. EiffelStudio accommodates quickly and efficiently new thoughts and changes.
    Downloads: 16 This Week
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  • 7
    ImpLib SDK

    ImpLib SDK

    ImpLib SDK produces custom Import libraries for Windows DLL

    ImpLib SDK combines free programming tools for authoring custom import libraries for Windows DLL (32 and 64 bit). The SDK supports advanced features, like cdecl2stdcall conversion, importing by ordinal, removing original thunk, storing symbols from different DLL files in a single import library. The ImpLib SDK is also useful to overcome any legal restrictions when redistributing the import libraries for certain DLL files, like the Microsoft® C++ runtime. The import libraries for the CRT or STL are part of the Windows SDK. Even though the SDK is available for free, redistributing these files is not allowed according to the current license agreements. An alternative is to generate these import libraries using the ImpLib SDK, as it doesn't restrict redistribution. The ImpLib SDK is free even for commercial use and redistribution of any kind, as long as all copyrights are preserved. Guide: https://implib.sourceforge.io/EN.HTM GitHub repo: https://github.com/vkamenar/implib-sdk
    Downloads: 5 This Week
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  • 8
    Refal.NET - Versatile, Compact yet Powfull Text Transformer and Compiler-Writing System. Based on Refal.NET Virtual Machine (+Refal.NET Compiler), this RAD-tool might be used for rapid prototyping, decreasing up to 10 times development efforts.
    Downloads: 6 This Week
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  • 9
    Decompiler for 1C Enterprise 7.7
    Downloads: 3 This Week
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  • 10
    Gentee is a friendly full-scale and free programming language. It is easy-to-master and can be a reliable assistant in your everyday work. Software developers can easily use it in their applications.
    Downloads: 4 This Week
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  • 11
    Ironseed is a crossplatform binary version-compatible programming language, an answer to Microsoft COM technology which also does not have such limitations.
    Downloads: 1 This Week
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  • 12
    ForceBasic - This is programming language for development software. Selecting unit library you can write program for some operation system. ForceBasic compiler can build crosspatform code, who executing with help virtual machine.
    Downloads: 1 This Week
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  • 13
    AL-IV

    AL-IV

    ALFOUR Programming language. Simple, safe, power, multi-platform.

    A programming language AL-IV (ALFOUR) is a high-level imperative object oriented programming language with minimal introduction level, easy porting to any platform claiming a very high level of safety and stability, with a controllable level of code protection, high efficiency of an executable code, full independence from a target platform, minimal enter level.
    Downloads: 0 This Week
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  • 14
    FORTH-like language compiler for AVR ATMega
    Downloads: 0 This Week
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  • 15
    The casket of Oberon-2 things (Oberon-2 language revival)
    Downloads: 0 This Week
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  • 16
    This project will help you to expose C++ libraries to Python. pygccxml package is an object oriented framework for reading C++ declarations. pyplusplus package is an object-oriented framework for creating a code generator for boost.python library.
    Downloads: 0 This Week
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  • 17
    C-smile OOL is a scripting language with C++-like grammar. It has compiler, VM running bytecodes and C++ extendible runtime. Intended to run in standlone and embedded mode.
    Downloads: 0 This Week
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  • 18
    C++ LALR parser generator
    Downloads: 0 This Week
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  • 19
    The aim of DynamiC++ project is the development of dynamic analyzer of C++ code witch can be applied to dynamic C++ compiler (for quick compilation) and for integrated development environment (because dynamic analyzer can be used for smart highlighting).
    Downloads: 0 This Week
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  • 20
    GinCompiler
    Pascal compiler for .NET with GUI.
    Downloads: 0 This Week
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  • 21
    Small and lightweight .NET 2.0 library written in C# for quickly evaluating arithmetical expressions using interpretation or runtime MSIL generation.
    Downloads: 0 This Week
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  • 22
    IMA2 Simple command-line editor of binary files (images, object filers, byte code, etc). More sofisticated that F4 option in FAR. More simple that GUI hex editors. Can be useed as command-line utility in scripts.
    Downloads: 0 This Week
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  • 23
    JAva Compiled EXpressions - Very fast exression engine for Java, compiled into Java bytecode. Features: - Strong typing - Comipilng into Java bytecode - No reflection during evaluating expressions - Better performance for prepared expressions
    Downloads: 0 This Week
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  • 24
    This project is the port of Lua programming language to Java platform. It contains the bytecode compiler and interpreter, that use the same bytecode format as the original version, and partially support standard Lua library.
    Downloads: 0 This Week
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  • 25
    Lemick is a project to make a programming language similar to those traditional Basic implementations but with all the attributes of the modern programming tool
    Downloads: 0 This Week
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