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.

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.

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

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.

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.

The Drip and IE Sieve leak detectors help web developers improve the performance of dynamic web pages by reporting avoidable memory leaks caused by Internet Explorer limitations.

NProf is a profiler for .NET applications. The project has moved to Google Code (http://code.google.com/p/nprof/).

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.

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

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.

.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.

Extension for Microsoft SQL Server Management Studio 2019, it provides the SSMS with: - Format SQL Code. - Prepare the Procedures/Functions to be called. - Regions to organize the code. - Retrieve the complete Information of a Table. - Tab Colorize, base in the configuration window you can colorize the existing session based in the filters that you applied, making easy to the developer to identify each server/database he/she is working on. - Selection Highlight for the same word in the SQL Code. - Style Markers for the same word in the SQL Code. - Configurable CRUD creation. - Copy/Paste Table Structure and Data (Client Side). - Grid Search, with advanced Extended and Regular Expression. - Grid Search Highlight. - Grid Style Markers. - Grid Export to JSON, Excel XML. - Grid Image Capture. - Configurable Header Text Template, with quick insert, so you can easily sign you codes. - Quick encapsulate code in region.

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)

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

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#