Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile.

There are many alternatives to Firebug for Windows and since it's discontinued a lot of people are looking for a replacement. The best Windows alternative is Firefox Developer Tools, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Firebug and 12 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Firebug are Google Chrome Developer Tools, Tiny JavaScript Debugger, HTTP Debugger and SplineTech Javascript Debugger.
Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile.

The Google Chrome Developer Tools provide an integrated environment for debugging, optimizing, and understanding a web application, or website, running in Google Chrome. The developer tools are developed partly through the WebKit open source project, where the tools are called...



TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavsScript.

HTTP Debugger Pro - A Professional HTTP Sniffer and Analyzer for Developers.




SplineTech JavaScript Debugger is the fastest independent standalone JavaScript Debugger that enables you to debug JavaScript for IE completely independently of any add-ons, plug-ins, Java or any other third-party proprietary tools.

HttpWatch is an HTTP viewer and debugger that integrates with IE and Firefox to provide seamless HTTP and HTTPS monitoring without leaving the browser window. It's available as a free edition and a PRO version that cost money and has additional features.

Omnibug is a plugin for the Google Chrome and Mozilla Firefox browsers to ease developing and debugging web metrics implementations. Each outgoing request (sent by the browser) is checked for a pattern; if a match occurs, the URL is displayed and decoded to show the details of...



HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.


Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

HTTP Headers allows you to quickly see the HTTP header information for the current URL.






The goal of this project is to adds information about the HTTP headers in three ways:

Almost the same functionality as Firebug, with a lot of improvements.