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

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  • 1
    ILSpy

    ILSpy

    .NET Decompiler with support for PDB generation, ReadyToRun, Metadata

    ILSpy is the open-source .NET assembly browser and decompiler. Visual Studio 2022 ships with decompilation support for F12 enabled by default (using our engine v7.1). In Visual Studio 2019, you have to manually enable F12 support. Go to Tools / Options / Text Editor / C# / Advanced and check Enable navigation to decompiled source. C# for Visual Studio Code ships with decompilation support as well. To enable, activate the setting "Enable Decompilation Support. ILSpy is distributed under the MIT License. Please see the About doc for details, as well as third-party notices for included open-source libraries. Visual Studio 16.3 and later include a version of the .NET (Core) SDK that is managed by the Visual Studio installer - once you update, it may get upgraded too. Please note that ILSpy is only compatible with the .NET 6.0 SDK and Visual Studio will refuse to load some projects in the solution.
    Downloads: 304 This Week
    Last Update:
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  • 2
    Roslyn

    Roslyn

    The .NET Compiler Platform

    Roslyn provides rich, code analysis APIs to open source C# and Visual Basic compilers. This enables you to access a wealth of information about your code from compilers, which you can then use for code-related tasks in your tools and applications. Roslyn dramatically lowers the barrier to entry for creating code-focused tools and applications, creating many opportunities for innovation.
    Downloads: 14 This Week
    Last Update:
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  • 3
    reko

    reko

    Reko is a binary decompiler

    Reko (Swedish: "decent, obliging") is a decompiler for machine code binaries. This project is freely available under the GNU General Public License. The project consists of front ends, core decompiler engine, and back ends to help it achieve its goals. A command line, a Windows GUI, and a ASP.NET front end exist at the time of writing. The decompiler engine receives inputs from the front ends in the form of either individual executable files or decompiler project files. Reko project files contain additional information about a binary file, helpful to the decompilation process or for formatting the output. The decompiler engine then proceeds to analyze the input binary. Reko has the ambition of supporting decompilation of various processor architectures and executable file formats with minimal user intervention. For a complete list, see the supported binaries page.
    Downloads: 12 This Week
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  • 4
    Decompiler

    Decompiler

    Binary executable decompiler

    Reko decompiler reads program binaries, decompiles them, infers data types, and emits structured C source code. Designed with a pluggable architecture, it currently has: - support for 68k, ARM, MIPS, PowerPC, Risc-V, Sparc, x86, Z80 processors and many more - support for EXE, Elf, AmigaOS Hunk executable formats and many more - support for MS-DOS, Win32, U*ix, AmigaOS , C64, ZX-81 Reko decompiler comes with a GUI and a command-line interface. Visit https://github.com/uxmal/reko for the GIT repository.
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    Downloads: 132 This Week
    Last Update:
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    CSharp.lua

    CSharp.lua

    The C# to Lua compiler

    The C# to Lua compiler. CSharp.lua is a C# to Lua compiler. Write C# then run on lua VM.
    Downloads: 9 This Week
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  • 6
    AvaloniaILSpy

    AvaloniaILSpy

    Avalonia-based .NET Decompiler (port of ILSpy)

    This is a cross-platform version of ILSpy built with Avalonia. Search for types/methods/properties (substring). Hyperlink-based type/method/property navigation. Extensible via MEF Extensibility (Check out TestPlugin folder). Note: This is not compatible with ILSpy Plugins. Grab artifacts from the latest master CI build. This includes Linux, Mac and Windows.
    Downloads: 5 This Week
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  • 7
    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: 23 This Week
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  • 8
    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: 20 This Week
    Last Update:
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  • 9
    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.
    Downloads: 17 This Week
    Last Update:
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  • 10
    Dotnet IL Editor (DILE) allows disassembling and debugging .NET 1.0/1.1/2.0/3.0/3.5 applications without source code or .pdb files. It can debug even itself or the assemblies of the .NET Framework on IL level.
    Downloads: 8 This Week
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  • 11
    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: 16 This Week
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  • 12
    Dyalect

    Dyalect

    Dyalect is a programming language for .NET Core

    Dyalect is a dynamic programming language for .NET Core platform. It is lightweight, fast and modern. Dyalect (or Dy for short) is written in C# and has zero dependencies except for standard .NET Core libraries, which means that it can seamlessly run on Windows, MacOS and Linux. Moreover you can use the same binaries on any of these platforms! Dy runs on the top of its own high performance virtual machine. It compiles fast and can be used as an embeddable language or as a scripting language of your choice. It is also a good language to learn programming. Dyalect offers modern syntax, inspired by such languages as C#, Swift, Go and Rust, first class functions, coroutines, expressive modules, a dynamic type system with an ability to extend existing types with new functions and much more. Dy is shipped with a crossplatform interactive console. Main repo: https://github.com/vorov2/dyalect
    Downloads: 13 This Week
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  • 13
    HydraDragonAntivirus

    HydraDragonAntivirus

    Dynamic and static analysis with Sandboxie for Windows, including EDR

    Dynamic and static analysis with Sandboxie for Windows, including EDR, ClamAV, YARA-X, custom machine learning AI, behavioral analysis, NLP-based detection, website signatures, Ghidra, Suricata, Sigma, and much more than you can imagine
    Downloads: 13 This Week
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  • 14
    xacc.ide is a opensource IDE aimed at mainly .NET development. It has a code editor written in 100% C# code, which is faster than most commercial offerings.
    Downloads: 7 This Week
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  • 15
    php2desktop

    php2desktop

    Build Windows desktop applications using PHP, Javascript, CSS & HTML

    php2desktop gives developers the ability to create content rich native Windows GUI applications using web technologies they're familiar with. Zero C language knowledge is necessary, simply copy your web files into the www directory and run by opening the .exe file. In a way, php2desktop is a PHP to exe compiler without the headache of running commands. php2desktop is an out-of-the-box solution that comes pre-built with PHP 8 and a Chromium 114 embedded browser; combine with the power of JavaScript, SQLite, HTML5 & CSS3 and you'll be making native desktop applications as easy as building a web application. Connect to APIs for interactive applications. Use your favourite framework such as Bootstrap or Laravel and change nothing about your workflow ... Your imagination's your only limit.
    Downloads: 11 This Week
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  • 16
    Liogo is a Logo Compiler for .NET. Liogo compile Logo files to .NET IL EXE or DLL. So, Liogo result could be launched directly on Windows and, via Mono runtime, on Linux. Last, with Liogo you can mix Logo code with C#/VB.NET code.
    Downloads: 6 This Week
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  • 17

    Biddlebaddleboo Programming Language

    BPLB is a developing programming language.

    Biddlebaddleboo Programming Language is a simple programming language that is more user friendly. Type "help" in the command prompt to view commands. You can download scripts by going to files, then scripts, then download which ever script you want to use and then you can execute it. You can upload your own scripts into that directory too. There is even a GUI and you can also launch files with it. This programming language has it's own file format which cannot be read with notepad. If you like this project, you can consider donating to paypal at johnmega1@gmail.com You can also donate via BitCoin to 1Ef6sdu6QtjdKPhLRq67ZzkHpu7QmmAnAj If you don't have any bitcoins, you can help me mine for bitcoins for 2 hours (more or less is okay but 2 hours is optimal for me). Software needed: GUIMiner recommended Host: stratum.bitcoin.cz Port: 3333 Username: Biddlebaddleboo.donation Password: donation
    Downloads: 9 This Week
    Last Update:
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  • 18

    ULS

    A lexical analyzer generator that makes the class source code.

    ULS is a class library for creating lexical analyzer from language specification file. It's provided as C/C++/C# and Java (class) libraries with a few of tools on Linux/Windows platform.
    Downloads: 8 This Week
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  • 19

    Android App Decompiler

    Decompile an Android APK

    Android App Decompiler is a useful Tool to unextract and decompiles Android APK. When you runed the Decompiler than created an folder with all Files from then APK and the dex (dalvik executable format) being converted to an jar file. You must only now use an Java Decompiler like jd-gui and you have all files of the App.
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    Downloads: 7 This Week
    Last Update:
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  • 20
    Cmajor

    Cmajor

    Cmajor is an experimental programming language.

    Cmajor is an experimental programming language strongly influenced by C++ and C#. It is semantically closer to C++ than C# and syntactically closer to C# than C++.
    Downloads: 5 This Week
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  • 21
    Decompiler for 1C Enterprise 7.7
    Downloads: 2 This Week
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  • 22
    Application Maker Wizard

    Application Maker Wizard

    A nice program that allows you to make your own database applications.

    You can develop your own database applications with this program. In addition, the program itself writes and compiles C# codes without the need for you to write code. You can see the codes and other project files in the project folder.
    Downloads: 2 This Week
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  • 23
    FishNET is a script engine for the .NET Framework. FishNET allows you to execute a source file written in C#, VB.NET or JScript.NET without having to build/compile it. FishNET can be compared almost directly to the cscript and wscript functionality of w
    Downloads: 2 This Week
    Last Update:
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  • 24
    [Project is currently suspended and no longer supported by SP extreme] Open License project goal is to develop a complete .NET License Manager. The purpose is to extend the built in License Manager functionality. Open License is being written in C#.
    Downloads: 2 This Week
    Last Update:
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  • 25
    "Sally - A Simple C++ IDE" is a simple development environment for WindowsXP or upper. The program is written in the C# programming language, and requires the Framework .Net 1.1 to run. It might work on Win98 or ME, but it has not been tested yet.
    Downloads: 2 This Week
    Last Update:
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