Open Source C# Debuggers

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.

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.

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.

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.

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.

logview4net is a log viewer/log monitor for data created by various sources. It can listen to UDP, tail a file, tail a SQL table, monitor the eventlog and watch RSS and Atom feeds. It requires the Microsoft .NET Framework 2.0

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.

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...

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.

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.

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

Decompiler for 1C Enterprise 7.7

Tool for iOS crash logs (crash report) symbolicating ( for OS Windows )

dotUnit is a port of JUnit (www.junit.org) to the Microsoft .net platform. This testing framework allows for automated unit and functional tests which are vital for refactoring and regression testing.

Gear is a Parallax Inc. Propeller emulator, with support for step through debugging and component plug-ins. Requires .NET 2.0

An implementation of Kent Beck's famous XUnit testing framework designed specifically for unit testing components written for the .NET platform.

.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.

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.

Visual Studio Add-In where developers can arrange their breakpoints via Drag'n'Drop in a tree structure to model a path of execution.

Integrated development environment for creating, editing, compiling, translating, debugging and profiling portable brainfuck programs.

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\

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.

ChecklistAgent - Unit testing for your runtime environment.

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.

Lightweight and easy to use logging framework for C#