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

  • Paessler - Monitor Your Whole Network in Minutes Icon
    Paessler - Monitor Your Whole Network in Minutes

    Auto-discovery finds your devices and deploys pre-configured sensors instantly. No project plan required, just visibility from day one.

    Waiting weeks for a monitoring rollout isn't an option when infrastructure doesn't stop running. PRTG's auto-discovery scans your network and suggests from over 200 pre-configured sensor types, so you're watching servers, applications and devices within minutes, not after a multi-week deployment. Enterprise-strength monitoring, without the enterprise complexity. Start your free trial today.
    Start Free 30-Day Trial
  • Demo Series - Small Business Backup By Veeam Icon
    Demo Series - Small Business Backup By Veeam

    Learn how to protect your Microsoft 365 data, with simple, actionable tips today.

    Watch this on-demand demo series and learn how to protect your Microsoft 365 data with clear, simple, actionable steps that are easy to implement for businesses of all sizes.
    Watch Demo Series
  • 1
    dnSpy

    dnSpy

    .NET debugger and assembly editor

    dnSpy is a free and open-source tool tailored for debugging, decompiling, and editing .NET and Unity assemblies—even without source code. It supports light/dark themes and portable use, making it popular among developers and reverse engineers.
    Downloads: 1,210 This Week
    Last Update:
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  • 2
    SharpDevelop

    SharpDevelop

    A free IDE for C#, VB.NET, & Boo projects on Microsoft's .NET platform

    SharpDevelop is the open-source IDE for the .NET platform. Write applications in languages including C#, VB.NET, F#, IronPython and IronRuby, as well as target rich and reach: Windows Forms or WPF, as well as ASP.NET MVC and WCF. It starts from USB drives, supports read-only projects, comes with integrated unit and performance testing tools, Git, NuGet and a lot more features that make you productive as a developer.
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    Downloads: 678 This Week
    Last Update:
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  • 3
    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: 86 This Week
    Last Update:
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  • 4
    LuaEdit is an IDE/Text Editor/Debugger for the Lua language. Its interface looks like MS Visual Studio .Net� and includes syntax highlighting, code completion, advance breakpoint management, efficient search engines, etc. Client under GPL and server (core debugger) under LGPL.
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    Downloads: 37 This Week
    Last Update:
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  • 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.
    Start Free
  • 5
    TestDriven.NET is a zero friction unit testing add-in for Visual Studio .NET. It is compatable with NUnit, xUnit and MSTest. You can download the full extension from http://www.testdriven.net. TestDriven.Net is now being maintained here: https://github.com/jcansdale/TestDriven.Net-Issues
    Downloads: 80 This Week
    Last Update:
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  • 6
    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: 9 This Week
    Last Update:
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  • 7
    MoonSharp

    MoonSharp

    An interpreter for the Lua language, written entirely in C#

    A complete Lua solution is written entirely in C# for the .NET, Mono, Xamarin and Unity3D platforms. Support for the complete Lua standard library with very few exceptions (mostly located on the 'debug' module) and a few extensions (in the string library, mostly). Supports dumping/loading bytecode for obfuscation and quicker parsing at runtime. An embedded JSON parser (with no dependencies) to convert between JSON and Lua tables. Easy opt-out of Lua standard library modules to sandbox what scripts can access. Easy to use error handling (script errors are exceptions). Support for coroutines, including invocation of coroutines as C# iterators.
    Downloads: 1 This Week
    Last Update:
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  • 8
    Tiny8051
    Tiny8051 is small 8051 microcontroller simulator written in C#. Project was created for educational purposes, to show how µP works by using clean visual interface and debugging. Note: communication over serial port was not implemented, because there was no demand for it.
    Downloads: 12 This Week
    Last Update:
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  • 9
    iOS Crash Logs Tool [todo: remove]

    iOS Crash Logs Tool [todo: remove]

    iOS crash logs symbolicating for Windows

    Tool for iOS crash logs (crash report) symbolicating ( for OS Windows )
    Downloads: 6 This Week
    Last Update:
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  • $300 Free Credits to Build on Google Cloud Icon
    $300 Free Credits to Build on Google Cloud

    New customers can spin up VMs, build with AI, and query data at no cost.

    Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
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  • 10
    Decompiler for 1C Enterprise 7.7
    Downloads: 4 This Week
    Last Update:
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  • 11

    C# DataTable StringBuilder Visualizer

    Visualize String, StringBuilder, Image, and DataTable in debug mode.

    Visualizer is a tool for .NET developers who use MS Visual Studio. In debug mode, it provides the ability to view and search objects of type String, StringBuilder, DataTable and Image, by clicking on the magnifying glass. Install by copying all files in the zip to your user folder: C:\Users\<username>\Documents\Visual Studio 2012\Visualizers\
    Downloads: 5 This Week
    Last Update:
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  • 12
    NProf is a profiler for .NET applications. The project has moved to Google Code (http://code.google.com/p/nprof/).
    Downloads: 3 This Week
    Last Update:
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  • 13
    A C#, C++, Delphi, ActiveX ,javascript and Java trace framework and a trace viewer: Tail, outputDebugString, event log, Log4J, Log4Net, Microsoft EIF support and Pocket PC development (C++ and .NET)
    Downloads: 3 This Week
    Last Update:
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  • 14

    .Net Memory Profiler

    .Net Memory Profiler

    .Net Memory Profiler is a single C# class that builds a tree of specified object's fields, their sub-fields and so on up to primitive types. And in the "Quick Watch" window of the Visual Studio you will be able to see the memory usage by each of those fields. For more details see screenshots.
    Downloads: 2 This Week
    Last Update:
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  • 15
    Pluk is a programming language. Something i am building because i want a compiled java/c# variant.
    Downloads: 2 This Week
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  • 16
    Tool for monitoring of OCI client applications [f.e.: TOAD/TOra, or any OCI-based fat client] interaction with Oracle Database. Monitors SQL statements and values passed/fetched between client application and RDBMS. Consists of simple and nice GUI [C#] and events handler [C++] with quite a lot of OCI hacking. Interface between handlers and tool's GUI is through tailing of XML "pipeline" files in $HOME/.ocimonitor directory. Tool is quite similar to Quest SQLMonitor, which is unable to trace values.
    Downloads: 1 This Week
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  • 17

    RapidDevelop R#

    RapidDevelop is an IDE and Compiler for a new programming language!

    RapidDevelop R# is an IDE and Compiler for a programming language called RapidLang. RapidLang (or r#) is a programming language based on c# and .Net which introduces some new paradigms and shorthand to improve development times and to help ease the creation of software in general. Being an extension of C#, you can link, build or compile native C# assemblies or Classes and Libraries so that you can very easily port existing code. The programming language also exists in a managed shared library and can be dropped into any .net project so that you can use the compiler in your own projects, with plans to even provide executing compiled code in memory, effectively creating a RapidLang Scripting Language plugin!
    Downloads: 1 This Week
    Last Update:
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  • 18
    Software Studio is an Integrated Development Environment (IDE) for C#, Java, VB.Net, Aspx, C++, Html, Xml, Php, JavaScript, Tex with multi-language support,syntax higlighting,code folding,code completetion,refactoring support
    Downloads: 1 This Week
    Last Update:
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  • 19
    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: 1 This Week
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  • 20
    CRDebug is a debugger application targeted primarily for developers of high-performance applications like games. It allows for data to be captured at run-time and analyzed at later stages using various visualization plugins CRDebug provides.
    Downloads: 1 This Week
    Last Update:
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  • 21
    Lightweight and easy to use logging framework for C#
    Downloads: 1 This Week
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  • 22

    Keyfile editor for Falcon BMS

    An editor for .key files for Falcon BMS 4.32

    This will help you edit those hard-to-understand .key files for your controller and keyboard setup with the game Falcon BMS 4.32 by Benchmarksims. Please refer to the thread on Benchmarksims forum for questions/suggestions/feedback where additional information and tutorial is avaliable (click Web Site-link below)
    Downloads: 1 This Week
    Last Update:
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  • 23
    Logger.NET is a logging framework which enables you to include code which contains logging information (like Entermethod, Exitmethod, variable values etc) to be logged. For licensing questions, see license.txt in the releases
    Downloads: 1 This Week
    Last Update:
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  • 24
    This is add-on for Ms Visual C++ which find useful comments in workspace projects such as '// TODO:', '// TASK:', '// NOTE:' and make easy navigation on them. This can increase team perfomance greatly. Added Ms Visual C++ STL Debugging features...
    Downloads: 1 This Week
    Last Update:
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  • 25
    This is a Windows QBasic emulator for Windows. It is suposed to run and build qbasic code. It can build/execute old qbasic code (currently in constructions) Version 0.1 has been released: New commands and lots of bugs removed.
    Downloads: 1 This Week
    Last Update:
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