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.

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    Go from Code to Production URL in Seconds

    Cloud Run deploys apps in any language instantly. Scales to zero. Pay only when code runs.

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    Ship Agents Faster

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  • 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: 1,221 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: 648 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: 95 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: 40 This Week
    Last Update:
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    Veeam Data Platform v13.1

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  • 5
    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
    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: 2 This Week
    Last Update:
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  • 7

    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: 2 This Week
    Last Update:
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  • 8
    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: 1 This Week
    Last Update:
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  • 9
    GateDebugger

    GateDebugger

    Debugging tools for application-to-application communication.

    GateDebugger may be performed free communication using COM port, TCP / IP, UDP and the like. Further, it can be blocked or free communication data and filter.
    Downloads: 2 This Week
    Last Update:
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  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
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  • 10
    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: 2 This Week
    Last Update:
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  • 11
    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: 2 This Week
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  • 12
    Pluk is a programming language. Something i am building because i want a compiled java/c# variant.
    Downloads: 1 This Week
    Last Update:
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  • 13
    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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  • 14
    An implementation of Kent Beck's famous XUnit testing framework designed specifically for unit testing components written for the .NET platform.
    Downloads: 0 This Week
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  • 15

    .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: 0 This Week
    Last Update:
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  • 16
    The ASL Notepad is a IDE for ACPI SourceLanguage with many Features like Syntax highlighting, Debugger, Compiler and so on. Currently available language is only German but we plan to integrate more lanuages in the next release.
    Downloads: 0 This Week
    Last Update:
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  • 17
    Visual Studio Add-In where developers can arrange their breakpoints via Drag'n'Drop in a tree structure to model a path of execution.
    Downloads: 0 This Week
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  • 18
    Integrated development environment for creating, editing, compiling, translating, debugging and profiling portable brainfuck programs.
    Downloads: 0 This Week
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  • 19

    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: 0 This Week
    Last Update:
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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: 0 This Week
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  • 21
    ChecklistAgent - Unit testing for your runtime environment.
    Downloads: 0 This Week
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  • 22

    ClrDbg

    Tool for opening dmp files for .NET applications.

    ClrDbg can open a dmp file, or connect to a running process, and display information about the objects on the heap and their class information (such as field definitions and method signatures), threads and their call stacks. ClrDbg uses the Microsoft.Diagnostics.Runtime.dll (ClrMD). The user-interface allows the user to drill-down by clicking on hyperlinks in a grid view.
    Downloads: 0 This Week
    Last Update:
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  • 23
    Lightweight and easy to use logging framework for C#
    Downloads: 0 This Week
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  • 24
    Debugging library for .NET (written in C#). Log as plain text, xml and treeviews into console, debug window, files and eventlog. Covers pretty much all debugging needs.
    Downloads: 0 This Week
    Last Update:
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  • 25
    Mock framework for c# which deal with static, non-virtual methods and sealed class.
    Downloads: 0 This Week
    Last Update:
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