JavaScript Debugger for Windows

Used JavaScript Debugger for Windows?

The Download Now link will prompt a local download of the Firefox extension. To install the extension directly, open the file using your Firefox browser.

Editors’ Review

Download.com staffFebruary 26, 2026

Venkman offers a robust JavaScript debugging environment specifically designed for browsers utilizing the Mozilla engine. It provides developers with essential tools to identify and resolve code issues efficiently.

Top Recommended Alternative

iGoogleBar

Free

Pros
- Provides a dedicated JavaScript debugging environment
- Aims for powerful debugging capabilities
- Supports Mozilla-based browsers
Cons
- Limited to Mozilla-based browsers

JavaScript Debugger for Windows

Used JavaScript Debugger for Windows?

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Full Specifications

GENERAL

Release: March 20, 2012

Latest update: February 26, 2026

Version: 0.9.89

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 95
Windows 98
Windows XP
Windows 2000
Windows ME
Windows Vista
Windows 10
Windows NT

Additional Requirements: Firefox 3.5 - 14.0a1

POPULARITY

Total Downloads: 5,527

Downloads Last Week: 3

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Last Updated

User Reviews

4/5

2 User Votes

it's the best solution available.
bryanthrasherDecember 1, 2007
Pros
Cons
Summary
you are great team work
mbhs2010November 11, 2007
Pros
best browser
Cons
spy
Summary

Developer’s Description

By Robert Ginda

Get a JavaScript debugging environment for Mozilla based browsers.

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