by Zulkarnain K.

25 Add-ons in this Collection

Greasemonkey by Anthony Lieuallen

Rated 4 out of 5 stars 1,544 reviews

720,530 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

iMacros for Firefox by Ipswitch, Inc.

Rated 4 out of 5 stars 1,073 reviews

513,182 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 50 reviews

67,537 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.

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 26 reviews

24,571 users

Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.

JSONovich by Will Elwood, mjgiarlo

Rated 4 out of 5 stars 47 reviews

5,481 users

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

PrefBar by Manuel Reimer

Rated 5 out of 5 stars 42 reviews

10,129 users

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 109 reviews

19,001 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 123 reviews

6,286 users

Gives a possibility to create custom toolbarbuttons...

Ubiquity by matyr

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Rated 5 out of 5 stars 118 reviews

513 users

An extension that allows for the use of dynamic commands in Firefox.

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 15 reviews

2,326 users

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

uc by matyr

Rated 5 out of 5 stars 15 reviews

690 users

A userChromeJS clone with built-in subscript/overlay loader capability.

JavaScript Terminal by Paul Rouget

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Rated 4 out of 5 stars 5 reviews

1,211 users

JavaScript Terminal for Firefox.

Developer Assistant by Ted Mielczarek, Gavin Sharp, others

Rated 4 out of 5 stars 46 reviews

1,227 users

A suite of tools for developers.

Custom Buttons² by SCClockDr, nicholasalipaz, others

Rated 4 out of 5 stars 75 reviews

81 users

The Custom Buttons² Firefox extension provides the code base support necessary to create, maintain, import, and export custom toolbar buttons. The buttons can perform just about any task, with a large number of buttons already available on the exte...

JavaScript Object Examiner by Chuck_Baker

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323 users

Display JavaScript object methods and properties for any available scope.
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