Open Source Debuggers

Browser Preview for VS Code enables you to open a real browser preview inside your editor that you can debug. Browser Preview is powered by headless Chromium, and works by starting a headless Chromium instance in a new process. This can either be Google Chrome or Microsoft Edge. This enables a secure way to render web content inside VS Code, and enables interesting features such as in-editor debugging and more! Make sure you have Google Chrome installed on your computer. Browser Preview for VS Code is debuggable, launch URLs and attach Debugger for Chrome to the browser view instance, and debug within VS Code. You can enable in-editor debugging of Browser Preview by installing Debugger for Chrome, and configure VS Code's debugger to either attach or launch to the browser previews by using the provided configuration options.

Cinemagoer is a Python package useful to retrieve and manage the data of the IMDb movie database about movies, people, characters and companies. Platform-independent, it can retrieve data from both the IMDb's web server and a local copy of the whole db.

Denwer is a collection of often-used web-servers for web-programmers. It is used to debug web-sites under Win32. Denwer includes: friendly installer; Apache; PHP; MySQL; Perl; virtual host management system; phpMyAdmin; sendmail stub; start/stop manager.

NetTool is a developer tool for monitoring and manipulating application-level network messages, particularly useful for debugging web applications and web services. There are two components to NetTool: the HTTP Client, and the TCP Tunnel.

MakeLogic Tail is an advanced "tail -f" command with GUI. It needs JRE 5.0, hence it is 'Tail for Windows', Linux or 'Tail for Mac'. It shows the last few lines of a growing log file in real time. Provides many more easy to use features. Try it!

the omega xvi project is a javascript debugger written in javascript. it can debug code, execute blocks of code or entire applications, as well as detect variables. because of its javascript nature, it can be run through a webpage, online.

This project has moved to: https://github.com/zbarutcu/asp-profiler

BugTraking is a Bugzilla like project. Written in Java.

Bugkilla is a set of java tools for the functional test of J2EE Web Applications. Specification and execution of tests will be automated for web front end and business logic layer. One goal is to integrate with existing frameworks and tools.

BugsBuddy MultiLingual by Valery Votintsev. BugsBuddy is a simple Bugtracker written in PHP with the use of AJAX. It also supports browsers without javascript. Original BugsBuddy written by Willem Meints 29.06.2006: http://sourceforge.net/projects/bugsbuddy/

Very simple profiler for PHP 3.0.16 scripts.

This is a remote-client programe based on MSN messenger. It can do many things for you.Such as file operation,db operation and chat robot.All these are based on MSN cha.

ConSense is a singular "jack of all trades" web development console intended to ease all your bugtracking, testing and page architecture tasks. Its siblings, RedSand and SimpleClasses form a sound, dynamic, object oriented JavaScript/DHTML framework.

An eclipse plugin providing tail in view component.

ElementProps is an Internet Explorer context menu extension that displays the properties of any DOM node in the current web page, including dynamically created elements and attributes.

httpdbg is an HTTP proxy server which is single-threaded and prints every HTTP request and response to a log file as well as to stdout. It effectively single-threads your browser, which can help in debugging race conditions.

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.

JLinkCheck is an Ant Task written in Java for checking links in websites. It is not just checking one single page, but crawling a whole site like a spider, generating a report in XML and (X)HTML. JReptator will be its succesor with many more features

Lio is a javascript logger. There is only one file to solute any thing about log.

Insight, the analysis TechTool for developers is a platform independent tool for viewing & analying run time meta data of applications. It aids in trouble shooting problems, and aids the developer in every day work through very advanced log analysis.

Netfox provides a quick look on all executed network requests performed by your iOS or OSX app. It grabs all requests - of course yours, requests from 3rd party libraries (such as AFNetworking, Alamofire or else), UIWebViews, and more.

A small suite of classes designed to examine objects through the Java reflection API. Analysis is package neutral and output can be written to log file or as HTML tables. The project focus is in debugging the state of a servlet or JSP.

Orome is a tool for automating System or Acceptance tests (also Unit test though this is not the focus) for web-based systems. Orome takes a set of static HTML pages defining a walkthrough of (part of) the systems and tests it against the running system.

The original intent was to make a pretty simple "connect and send" http client, it has since grown to include as much http 1.0 client capabilitlies (as defined in RFC 1945) as possible.

PHP Profiler is both a Zend extension and module capable of generating profiling information (function call statistics) for PHP applications on the server side. No PHP code has to be changed, although the profiler data is available to your scripts.