Firefox Developer Tools is not available for Mozilla Firefox but there are some alternatives with similar functionality. The best Mozilla Firefox alternative is Web Developer, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Firefox Developer Tools and five of them are available for Mozilla Firefox so hopefully you can find a suitable replacement. Other interesting Mozilla Firefox alternatives to Firefox Developer Tools are HttpWatch, Javascript Debugger (Venkman), Tiny JavaScript Debugger and Omnibug.
The Web Developer extension adds various web developer tools to a browser. The extension is available for Chrome, Edge, Firefox, and Opera, and will run on any platform that these browsers support including Windows, macOS and Linux.
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.
Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.
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.
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...
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