The Best 29 Firebug Alternatives

  • Google Chrome Developer Tools icon

    Google Chrome Developer Tools

    The Google Chrome Developer Tools provide an integrated environment for debugging, optimizing, and understanding a web application, or website, running in Google Chrome.

    Free Open Source Mac OS X Windows Linux Chrome

  • Opera Dragonfly icon

    Opera Dragonfly

    Opera Dragonfly is a feature of Opera web browser: it is a full-featured development and debugging tool integrated into Opera.

    Free Mac OS X Windows Linux

  • HttpWatch icon

    HttpWatch

    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...

    Commercial Windows Firefox

  • Live HTTP Headers icon

    Live HTTP Headers

    The goal of this project is to adds information about the HTTP headers in three ways: First by adding a 'Headers' tab in 'View Page Info' of a web page.

    Free Mac OS X Windows Linux Firefox

  • Live HTTP Headers (Chrome) icon

    Live HTTP Headers (Chrome)

    Monitor all HTTP/HTTPs traffic from your browser. Live HTTP Headers logs all HTTP traffic between Google Chrome and the Internet. This extension can be helpful if...

    Free Mac OS X Windows Linux Chrome

  • Visual Inspector icon

    Visual Inspector

    Visual Inspector by CanvasFlip is a website inspector and editor made by and for designers. Get measurements, inspect and make changes to design and text inline and with...

    Freemium

  • Graphical HTTP Client icon

    Graphical HTTP Client

    HTTP Client is a Mac OS X Leopard developer tool for debugging HTTP services by graphically creating and inspecting complex HTTP messages.

    Commercial Mac OS X

  • SplineTech Javascript Debugger icon

    SplineTech Javascript Debugger

    SplineTech JavaScript Debugger is the fastest independent standalone JavaScript Debugger that enables you to debug JavaScript for IE completely independently of any...

    Commercial Windows

  • HTTP Headers icon

    HTTP Headers

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

    Free Mac OS X Windows Linux

  • HTTP Debugger icon

    HTTP Debugger

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

    Commercial Windows

  • DOMScope icon

    DOMScope

    DOMScope is an online web inspector and debugger for mobile web apps. Like Chrome's DevTools, it allows developers to navigate through the HTML, list applied CSS...

    Free Web

  • Tracy icon

    Tracy

    Tracy: the addictive tool to ease debugging PHP code for cool developers. Friendly design, logging, profiler, advanced features like debugging AJAX calls or CLI support....

    Free Open Source Self-Hosted PHP

  • RESTed icon

    RESTed

    RESTed allows developers to quickly format and make HTTP requests and view the response. RESTed supports both basic HTTP authentication and OAuth. RESTed shows...

    Commercial

  • Site Relic icon

    Site Relic

    Site Relic is a FREE toolbox where you can test your website for performance & security in seconds without user registration.

    Freemium Web

  • GraphicalHttpClient icon

    GraphicalHttpClient

    Graphical Http Client is a utility to help you test and interact with REST-based web services. It is lightweight, easy-to-use, and has the following features: - Set...

    Commercial