DDD - Data Display Debugger - A graphical X Window front-end for command-line debuggers such as GDB, DBX, WDB, Ladebug, JDB, XDB, the Perl debugger, or the Python debugger. Spline Technologies Corporation - Offers debuggers for ASP, JavaScript, and VBS. Information available on features and system requirements as well as an online demo. [Commercial] Auto Debug System - An auto-tracing tool to spy Window API and COM Interface calls. Sankhya Tools for Software Development - Sankhya Simulator, a retargetable Instruction Set Simulator that loads ELF/DWARF and S-Record Files; Sankhya Debugger, a simple assembly level system debugger. HP WDB Debugger - An HP-supported implementation of the GNU GDB debugger. SmartInspect - A logging tool for debugging and monitoring .NET, Java and Delphi applications. Includes various logging libraries and a graphical viewer application. Site includes screenshots, tour, articles, and details of features. [Commercial, with free trial] Microsoft Debugging Tools - Downloads and related resources for debugging tools for Windows. Clewn - This tool implements full 'gdb' support for the 'vim' editor. Site includes feature overview, documentation, installation notes, screenshots, mailing list, bug tracking and download option. [GPL] Zeta Debugger - Stand-alone debugger for C/C++ applications, running on MS-Windows platforms, supporting Borland C++ and Visual C++. Site includes feature overview, documentation, screenshots, download option, source code access. [MIT License] Pyclewn - Allows the use of 'vim' as a debugger front-end. Provides support for the 'gdb' and 'pdb' debuggers (Unix/Windows). Site includes news, installation notes, FAQ, documentation and download option. [GPL] GDB: The GNU Debugger - The standard debugger for the GNU software system. Runs on many Unix-like systems, supports Ada, C, C++, FreeBASIC, Free Pascal and Fortran. Site includes release schedule, documentation, download option, news, bug reports and mailing lists. WinGDB - Visual Studio add-in for debugging embedded targets, local Cygwin/MinGW applications or Unix programs on remote machines using GDB as a backend and SSH protocol for communication. Most Visual Studio debugger features are supported. Site includes a feature overview, screenshots, trial download option, and purchasing information. Online Regular Expression Validator - One page web-site that offers a very basic mechanism to enter regular expressions and to test if provided input matches these. Result output is in the form of some sort of parse tree. Deviare API Hook - This Code Interception Library can be used to intercept arbitrary API calls, and thus control any application's code execution. It can be used in any COM supporting language like C++, VB and .NET. Site includes documentation, download option, demonstration videos, a product blog, and examples. [Free software, registration required] Wikipedia: Debugging - Article with links to many related topics. Article includes origin, scope, tools, process, and techniques. Insight - Graphical user interface to the GNU Debugger (GDB) that is written in Tcl/Tk. Site includes screenshots, download option, bug database, and FAQ section. [GPL v2, v3] Coretrace - Tool for debugging of embedded Linux applications. Site includes documentation, platform coverage, download option, and tips and tricks section. [GPL v3] TimeMachine Debugging Suite - Forward and backward (in time) debugger for embedded C/C++ by Green Hills Software. Site includes some documentation, screenshot, and datasheet. [Commercial] Mohit.io - Category Debugging - Series of articles on the topic of debugging, in the form of a blog. Most articles were written in 2008/2009 timeframe. Google Beaver Debugger - Cross-platform GDB frontend with graphical user interface for C++, C and QScript. Site includes download option, open issues overview, source code access and blogs. [Lesser GPL]