Extension Developer's Toolbox

by Mike Kaply

  • Updated March 8, 2012

About this Collection

Add-ons that help you make add-ons!

6 Add-ons in this Collection

SQLite Manager by lazierthanthou

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Rated 4 out of 5 stars 354 reviews

74 users

Manage any SQLite database on your computer.

Live HTTP Headers by Daniel Savard, Nikolas Co

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Rated 4 out of 5 stars 216 reviews

30 users

View HTTP headers of a page and while browsing.

JavaScript Debugger by James Ross, Robert Ginda, others

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Rated 4 out of 5 stars 52 reviews

731 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

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

Quick Locale Switcher by ppclick

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Rated 3 out of 5 stars 88 reviews

50 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

DOM Inspector by SeaMonkey Council

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Rated 5 out of 5 stars 78 reviews

12,745 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

Developer Assistant by Ted Mielczarek, Gavin Sharp, others

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Rated 4 out of 5 stars 46 reviews

0 users

A suite of tools for developers.

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