Developer Tools

by netcon

36 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,774 reviews

2,234,337 users

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

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 376 reviews

394,250 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

Web Developer by chrispederick

Rated 5 out of 5 stars 213 reviews

531,980 users

The Web Developer extension adds various web developer tools to the browser.

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 341 reviews

291,778 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 35 reviews

190,925 users

Manage any SQLite database on your computer.

RESTClient, a debugger for RESTful web services. by Chao ZHOU

Rated 4 out of 5 stars 82 reviews

135,045 users

Notice: some important features (XML indentation and load old saved requests) are missing in version 2.0.0, please update to version 2.0.1.

Please follow the link ("View other versions") below To install version 2.0.1.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

166,197 users

View HTTP headers of a page and while browsing.

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 20 reviews

52,098 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

JSONView by Ben Hollis

Rated 5 out of 5 stars 131 reviews

96,545 users

View JSON documents in the browser.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 161 reviews

94,085 users

An HTTP analyzer addon for Firefox

Modify Headers by Gareth Hunt

Rated 4 out of 5 stars 71 reviews

221,926 users

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

HttpRequester by Tom Mutdosch

Rated 5 out of 5 stars 42 reviews

49,557 users

A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.

SeoQuake SEO extension by SeoQuake Team

Rated 4 out of 5 stars 207 reviews

82,615 users

Seoquake is a Firefox SEO extension aimed primarily at helping web masters who deal with search engine optimization (SEO), social media optimization (SMO) and internet promotion. Seoquake allows to investigate many important SEO parameters.

XPath Checker by Brian Slesinsky

Rated 5 out of 5 stars 18 reviews

26,404 users

An interactive editor for XPath expressions.

Abduction! - Webpage Screenshots Screen Capture by M. Evans

Rated 4 out of 5 stars 516 reviews

46,551 users

1) Capture an page or just a specific region.
2) Adds a right click option to take screen shots of an entire web page or just part of a web page to save as an image.

VIDEO: http://youtu.be/vpnPvNShpWQ
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