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

  • Automated RMM Tools | RMM Software Icon
    Automated RMM Tools | RMM Software

    Proactively monitor, manage, and support client networks with ConnectWise Automate

    Out-of-the-box scripts. Around-the-clock monitoring. Unmatched automation capabilities. Start doing more with less and exceed service delivery expectations.
  • ContractSafe: Contract Management Software Icon
    ContractSafe: Contract Management Software

    Take Control Of Your Contracts Without Wrecking The Budget

    Ditch those spreadsheets, shared drives & crazy-expensive solutions with too many bells & whistles. ContractSafe offers the simplest way to manage your contracts efficiently without breaking the bank.
  • 1

    MinGW - Minimalist GNU for Windows

    A native Windows port of the GNU Compiler Collection (GCC)

    MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.
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    Downloads: 5,510,368 This Week
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  • 2
    Dev-C++

    Dev-C++

    Open Source C & C++ IDE for Windows

    Dev-C++ is a full-featured Integrated Development Environment (IDE) for Win32. It uses GCC, Mingw or Cygwin as compiler and libraries set. It supports Windows 98, NT, 2000 & XP. This is the original Dev-C++ software as published by Colin Laplace and this repository is frozen to version 4.9.9.2. For more recent versions of Dev-C++, please check the following forks: - Embarcadero Dev-C++: https://sourceforge.net/projects/embarcadero-devcpp/ (last update: March 2021) - Orwell Dev-C++: https://sourceforge.net/projects/orwelldevcpp/ (last update: 2016) - wxDev-C++: http://wxdsgn.sourceforge.net/ (last update: 2012)
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    Downloads: 116,694 This Week
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  • 3
    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: 12,984 This Week
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  • 4
    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: 5,378 This Week
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  • Free CRM Software With Something for Everyone Icon
    Free CRM Software With Something for Everyone

    216,000+ customers in over 135 countries grow their businesses with HubSpot

    Think CRM software is just about contact management? Think again. HubSpot CRM has free tools for everyone on your team, and it’s 100% free. Here’s how our free CRM solution makes your job easier.
  • 5

    Steel Bank Common Lisp

    Common Lisp compiler and runtime

    A high performance Common Lisp compiler. In addition to standard ANSI Common Lisp, it provides an interactive environment including an a debugger, a statistical profiler, a code coverage tool, and many other extensions.
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    Downloads: 1,828 This Week
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  • 6
    GnuCOBOL

    GnuCOBOL

    A free COBOL compiler

    GnuCOBOL (formerly OpenCOBOL) is a free, modern COBOL compiler. GnuCOBOL implements a substantial part of the COBOL 85, X/Open COBOL and newer ISO COBOL standards (2002, 2014, 2023), as well as many extensions included in other COBOL compilers (IBM COBOL, MicroFocus COBOL, ACUCOBOL-GT and others). GnuCOBOL translates COBOL into C and internally compiles the translated code using a native C compiler. Build COBOL programs on various platforms, including GNU/Linux, Unix, Mac OS X, and Microsoft Windows. GnuCOBOL has also been built on HP/UX, z/OS, SPARC, RS6000, AS/400, along with other combinations of machines and operating systems. Copyright 2001-2024 Free Software Foundation, Inc. The cobc compiler is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the FSF; either version 3, or (at your option) any later version. The libcob run time support source tree is licensed under the GNU LGPL.
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    Downloads: 715 This Week
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  • 7

    gcc-win64

    x64 build of GCC for Windows

    x64 C/C++ compiler for Windows using: - gmp - mpfr - mpc - isl - cloog - mingw-w64 - gcc - seh You need at least core2 command set support to run this application.
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    Downloads: 7,323 This Week
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  • 8
    Turbo Pascal (With DOSBox)

    Turbo Pascal (With DOSBox)

    Free compiler and development environment for Pascal

    Turbo Pascal (With DOSBox) (TPWDB) is a free and open source compiler and Integrated Development Environment (IDE) for Pascal language on Windows 64 Bit and 32 Bit. Using basic Pascal programming, many functions, no need to install multiple steps and integrate some other tools.
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    Downloads: 1,024 This Week
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  • 9
    WinAVR
    WinAVR (tm) is a suite of executable, open source software development tools for the Atmel AVR series of RISC microprocessors hosted on the Windows platform. Includes the GNU GCC compiler for C and C++.
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    Downloads: 759 This Week
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  • PMG Low-Code Automation Platform Icon
    PMG Low-Code Automation Platform

    For companies of all sizes interested in a low-code and digital process automation platform

    PMG is a low-code software platform that allows users to configure automation solutions and business applications to drive digital transformation initiatives. From streamlining business processes through automation, to integrating existing systems and filling in point solution functionality gaps, to delivering a collaborative workspace and unified user experience – PMG’s low-code platform does it all without coding. Business users as well as IT resources are empowered to configure, deploy, and maintain solutions that meet their company’s specific needs.
  • 10
    Psychology Experiment Building Language
    PEBL (Psychology Experiment Building Language) is a system designed for creating psychology and neuroscience experiments and tests. It is cross-platform, with the intention to run the same experiment, unchanged, on Linux, Windows, and Macintosh PCs.
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    Downloads: 724 This Week
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  • 11
    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: 461 This Week
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  • 12

    unluac

    A decompiler for Lua 5.x

    unluac is a decompiler for Lua 5.0 through 5.4. It runs on Lua chunks that have been compiled with the standard Lua compiler. It requires that debugging information has not been stripped from the chunk. (By default, the Lua compiler includes this debugging information.) This program is written in Java. A JAR package is available in the downloads section so you don't have to compile it. It runs from the command line and accepts a single argument: the file name of a Lua chunk. The decompiled code is printed to the standard output. Here is an example usage of unluac: java -jar unluac.jar myfile.lua > myfile_decompiled.lua The current version also has pretty good support for Lua 5.0 and Lua 5.1. Support for later versions is also good if the code doesn't use too many gotos.
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    Downloads: 434 This Week
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  • 13
    GCBASIC
    GCBASIC is an open-source BASIC compiler for 8 bit Microchip PIC, Atmel AVR legacy, AVRDx and LGT microcontrollers. Also included in the project is Graphical GCBASIC, an icon based editor for GCBASIC programs. This is a continuous release project. The latest release is always available. This will give you the most complete development toolchain to create and program 8-bit PIC, AVR and LGT microcontrollers. We have added new capabilities that make GCBASIC the easiest tool set available - supporting over 1300's microcontrollers with tools to make this fun and simple. Please see the download section for your options. We have two IDEs, we have just the compiler and we have a minimal install - it is your choice. Please see the homepage here: http://gcbasic.sourceforge.net and also see http://gcbasic.sourceforge.net/download.html for other GCBASIC download options.
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    Downloads: 273 This Week
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  • 14
    JSmooth creates standard Windows executable files (.exe) that smartly launch java applications. It makes java deployment much smoother and user-friendly, as it is able to find and run Java VMs by itself, or help the user get one if none are available.
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    Downloads: 226 This Week
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  • 15
    This is NASM - the famous Netwide Assembler. THIS PAGE IS OUT OF DATE; we no longer use any Sourceforge services other than mailing lists. Get the current versions from http://www.nasm.us/.
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    Downloads: 154 This Week
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  • 16
    Pascal XE

    Pascal XE

    Pascal XE is an easy to use IDE for Pascal programming.

    Pascal XE is an IDE for Pascal programming, it is user friendly and designed specially for beginners in programming. Pascal XE includes 3 free compilers: - Virtual Pascal Compiler 2.1.279 (default) - Free Pascal Compiler 3.0.4 - GNU Pascal Compiler 20070904
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    Downloads: 325 This Week
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  • 17
    Jad Java decompiler plugin for Eclipse IDE.
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    Downloads: 133 This Week
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  • 18
    gputils is a collection of tools for Microchip PIC microcontrollers. Its goal is to be fully compatible with Microchip's tools, MPASM, MPLINK, and MPLIB.
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    Downloads: 139 This Week
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  • 19
    IKVM.NET is a JVM for the Microsoft .NET Framework and Mono. It can both dynamically run Java classes and can be used to convert Java jars into .NET assemblies. It also includes a port of the OpenJDK class libraries to .NET.
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    Downloads: 79 This Week
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  • 20
    A disassembler for the linux platform. Currently this supports x86 ELF files assumed to be written in C and output to intel- syntax assembly language; however the design is modular and replacements for any of these can be written.
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    Downloads: 226 This Week
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  • 21
    SMC - The State Machine Compiler

    SMC - The State Machine Compiler

    Translates state machine into a target programming language.

    SMC takes a state machine stored in a .sm file and generates a State pattern in 14 programming languages. Includes: default transitions, transition args, transition guards, push/pop transitions and Entry/Exit actions. See User Manual for more info.
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    Downloads: 71 This Week
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  • 22

    open-watcom

    Open Watcom C/C++ compilers and tools Fork

    C/C++ compilers and tools to compile and build for targets DOS 16/32-bit, RDOS, Windows 16/32-bit, OS/2 16/32 bit, Linux 32-bit (x86), Netware running on host OS DOS, Windows 16/32/64-bit, OS/2, Linux 32/64-bit (x86/x64) Open Watcom is now completely moved to GitHub Open Watcom 2.0 https://github.com/open-watcom/open-watcom-v2#open-watcom-v2-fork Open Watcom 1.9 https://github.com/open-watcom/open-watcom-1.9
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    Downloads: 70 This Week
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  • 23
    This project has moved to http://wixtoolset.org. The WiX toolset is a set of tools that builds Windows installation packages from text source code. The toolset supports a command line environment that developers may integrate into their build processes to build setup packages for the Windows platform.
    Downloads: 47 This Week
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  • 24
    Develop with Java 1.5, deploy native executables for windows, linux and mac! SWT, JFace, AWT and Swing is supported.
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    Downloads: 129 This Week
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  • 25
    Eclipse Portable [4.6–4.26]

    Eclipse Portable [4.6–4.26]

    Portable version of the multifunctional development platform Eclipse.

    With this portable version of Eclipse, you can develop software directly from your removable mass storage device, even without admin rights. To get started, please visit the Eclipse Portable wiki: https://sourceforge.net/p/eclipse-neon-portable/wiki GitHub: https://github.com/Berny23/eclipse-portable Thank you for over 180,000 Downloads! Please note: A few months ago, I completely switched to Linux (now Arch btw). So, I'll be no longer active creating portable apps for Windows.
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    Downloads: 231 This Week
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