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Illuminations is made by Steven Roussey, one of the volunteer developers of Firebug, so it should be no surprise that it is designed to work with it:

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Requires Firefox & Firebug

Illuminations for Developers

A browser extension that takes JavaScript frameworks and makes their internals visible, including views, models, class names, and more.

Now Shipping for Sencha Inc.'s ExtJS frameworks.

ExtJS versions 2.x, 3.x, 4.x, 5.x, 6.x

Beta support for Dojo Toolkit, SproutCore, qooxdoo, YUI3, Google Closure Library, and alpha support for EmberJS, BackboneJS (including StackMob and Parse), Uki, Enyo2, and jQueryUI.

Read the Introduction on the Blog...

Hidden, secret alpha version for Chrome. Shhh...

v1.1.31 Update for ExtJS6 -- 5 December 2015

v1.1.30 Fix issue for bug related to new Firefox/Firebug version -- 1 March 2015

v1.1.29 Fix for Records side panel -- 18 September 2014

v1.1.28 Update for Firefox 30, Firebug 2, and ExtJS 5.x -- 10 June 2014

I'm really excited to see tools which try to help the developer piece together a coherent story about the state of their web apps, instead of just burying them in a pile of data. I think the natural next step is to follow this evolution from straight data to... interpreted data, data that anticipates the questions web developers are trying to answer. I think Illuminations really nails that when it comes to web toolkit users.—Johnathan Nightingale, Director of Firefox Development, Mozilla

Illuminations saves Sencha developers time and effort in understanding and debugging complex web applications, making it an invaluable tool for every development.—Abraham Elias, CEO, Sencha Inc.

Commercial License	Personal License
For companies and organizations	For individual developers
$50 includes 1yr $25/yr thereafter	$25 includes 1yr $12/yr thereafter
Get Started	Get Started