Javascript Debugger (Venkman)!

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

If you installed IETab, UnMHT will failed to display the MHT file in your local machine. Please disable following from IETab's site filter. /^file: / / /.* .(mht|mhtml$/ * **FIXED]** Support API change in LoadContextInfo.jsm on Firefox 51 or newer version. * Source code released under Custom License
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Javascript Debugger (Venkman) alternatives


Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS,...

tags: Discontinued css debugger firefox-extension html
platform: Mac OS X Windows Linux Firefox Discontinued

Google Chrome Developer Tools

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

tags: css3 developer-tools dom html5 https-support
platform: Mac OS X Windows Linux Google Chrome

Firefox Developer Tools

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

tags: css developer-tools firefox-based html javascript
platform: Mac OS X Windows Linux Firefox

Opera Dragonfly

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

tags: debugger developer-tools dom remote-debugging web-development
platform: Mac OS X Windows Linux

SplineTech Javascript Debugger

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

tags: debugger javascript-debugger
platform: Windows


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

tags: cross-browser-testing mobile-apps-development mobile-browser mobile-testing testing
platform: Online

Flow (type)

Flow uses type inference to find bugs even without type annotations. It precisely tracks the types of variables as they flow through your program.

tags: debugger developer-tools javascript-development programming web-development
platform: Online Self-Hosted

Tiny JavaScript Debugger

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the applicat...

tags: debugger firefox-addon-development
platform: Mac OS X Windows Linux Firefox