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.

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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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: 585 This Week
    Last Update:
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  • 2
    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: 127 This Week
    Last Update:
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  • 3
    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: 52 This Week
    Last Update:
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  • 4
    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: 40 This Week
    Last Update:
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  • Test your software product anywhere in the world Icon
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  • 5
    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: 8 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: 6 This Week
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  • 7
    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: 27 This Week
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  • 8
    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: 4 This Week
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  • 9
    XSharpDev

    XSharpDev

    XSharp Repository for the Compiler source code

    The Roslyn folder contains (modified) source from Roslyn The XSharp folder contains our own source for the compiler, documentation and other components. For the build process of the compiler we create our own "specialized" version of the CSharp Compiler. The source for this compiler and codeanalysis.dll is in the Tools folder. This compiler will translate some of the Roslyn Namespaces from CSharp into XSharp to prevent name conflicts when assemblies of both origins are in memory at the same time. Make sure you have VS 2019 or 2017 installed. The preferred edition is Enterprise. Make sure you have Java JDK on your machine and that you have the Java binaries folder in your Path. If you do not have Vs 2019 Enterprise you can set 2 environment variables to the VS version and edition you have installed.
    Downloads: 3 This Week
    Last Update:
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  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

    Trusted by 150 million+ creators and businesses globally

    Unlock Picsart's full editing suite by embedding our Editor SDK directly into your platform. Offer your users the power of a full design suite without leaving your site.
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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: 10 This Week
    Last Update:
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  • 11
    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: 1 This Week
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  • 12
    A Windows native distribution of Bigloo, a Scheme system that includes an optimizing compiler generating C code, Java classes and .NET CIL files as well as an interpreter.
    Downloads: 9 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: 9 This Week
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  • 14
    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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  • 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: 4 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: 2 This Week
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  • 17
    <HTML> Editor
    <HTML> Editor is a free open source HTML editor from Sheva Software Inc the HTML Editor includes syntax highlighting and a unique feature of a live previewing of current HTML document, check it out, and please wright a review if possible.
    Downloads: 1 This Week
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  • 18
    .Net Assembly Viewer/Disassembler/decompiler is a .net assembly viewer, disassembler and decompiler written in C#.
    Downloads: 3 This Week
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  • 19
    ... visualizes EBNF (Extended Backus Naur Form). Therefore an .ebnf File is required, which contains rules written in EBNF. The program parses the rules, visualizes them as syntax diagrams and is able to generate .gif and .emf files for further use.
    Downloads: 3 This Week
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  • 20
    IronMeta is an implementation of Alessandro Warth's OMeta metaprogramming system in C#. It provides a packrat parser generator that generates parsers for Parsing Expression Grammars that operate on arbitrary streams of objects.
    Downloads: 1 This Week
    Last Update:
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  • 21
    8088 Software Development Environment for the .NET & WIN32 platform. Program and control the windows pc with 8088 ML. Assemble, Disassemble, Emulate 8088 Assembler. Realtime I/O
    Downloads: 2 This Week
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  • 22
    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: 2 This Week
    Last Update:
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  • 23
    MixNet is a compiler of Mixal assembly language described in Knuth's "The Art of Computer Programming" for Microsoft.NET framework. MixNet generates .NET executable files. All source code is written in C#.
    Downloads: 2 This Week
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  • 24
    JB2CSharp is a port of the Java-Bison/Flex software developed by the Serl project at the University of Colorado, Boulder. Parsers and lexers will be able to use C# actions. The open source .NET project Mono has requested the port, and here it is.
    Downloads: 1 This Week
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  • 25
    ThinLisp is a practical dialect of lisp for real world applications. You develop in Common Lisp, you deploy in C. ThinLisp programs are as fast as C, by design. Used for a decade in million line systems.
    Downloads: 1 This Week
    Last Update:
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