• Debugging tools allow programmers to detect problems in software.computer bug image by Sergey Tokarev from Fotolia.com
  
  Debuggers are an essential element of software development. They are computer programs that give programmers the ability to detect, investigate and repair bugs and errors of software applications. Some web-based debugging tools track these problems and allow teams and the general public to submit bugs and make comments about them. Debuggers are available for different platforms and can be commercial or free open-source products.
  
  

Debugging Tools for Windows

• Debugging Tools for Windows is a software package featuring a collection of debugging tools for the Windows operating system. It can detect problems in Windows applications, drivers, services and the operating system kernel. It includes four debugging tools: WinDbg, NTSD, CDB and KD. All of the tools are console-based and keyboard driven except for WinDbg, which has a graphical user interface. Debugging Tools for Windows is a free download available from Microsoft's developer website.
  
  microsoft.com
  
  

GNU Project Debugger (GDB)

• The GNU Project Debugger is a free open-source tool that pinpoints software problems. It examines programs written in C, C++, Ada and many other languages. The programs can be run on the same machine or remotely as GDB. The debugging tool can run on UNIX-based and Windows operating systems.
  
  gnu.org
  
  

PHPEdit

• PHPEdit is an integrated development environment (IDE) for web developers who write applications in the programming language PHP. The program includes a debugger. PHPEdit allows debugging of local and remote applications. It can also be integrated into the toolbar of the Firefox web browser. PHPEdit is a commercial application. A trial version can be downloaded from the PHPEdit website.
  
  phpedit.com
  
  

SQL Ultimate Debugger

• SQL Ultimate Debugger is used by SQL server database developers to track problems in database code. It can trace issues on development and production servers. The software can provide a report of performance issues for each line of code. It can be set to monitor databases in a live environment. SQL Ultimate Debugger is commercial software created by SQL Solutions. A trial version is available online from the manufacturer's website.
  
  sqlsolutions.com
  
  

Bugzilla

• Bugzilla is a bug-tracking system used by individual programmers as well as large teams to help keep tabs on problems, requests, to-do items and feature development. The free and open-source software is maintained by a team of computer professionals affiliated with the Mozilla Foundation. Users of Bugzilla can download and install it on their own web servers. Access can be made public or private. End users are able to submit bug reports to developers. Add-ons to the software are available to extend its capabilities.
  
  bugzilla.com