Web Development

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FireMobileSimulator

this add-on simulates japanese mobile device.
this add-on support DoCoMo, Au(KDDI) and SoftBank device.

Rated 4 out of 5 stars (11)
69,060 users

Jenkins Build Monitor

Monitor Jenkins (http://jenkins-ci.org) builds and display the status on Firefox status bar.
OS X users, don't forget to install Growl http://growl.info/ .

Rated 5 out of 5 stars (40)
1,518 users

FireFlow

Firebug extension to help reverse engineer code flows.

Rated 4 out of 5 stars (4)
1,861 users

URL Fixer Plus RU and UA

Extended URL Fixer for RU and UA

Rated 4 out of 5 stars (20)
50,483 users

Whois & Flags Firefox & Websites Popularity Rating

Display Country Flag indicating Website Physical Location (Country, State, City). Website Popularity (Live Visitor Statistics). Shows how many users are visiting any World Website per day. Website IP IPv6 Addresses, DNS, Hosting. IP Whois Lookup

Rated 4 out of 5 stars (7)
3,911 users

File Logging (Selenium IDE)

A plug-in for Selenium-IDE to save log to a file

Rated 5 out of 5 stars (5)
6,756 users

SourceEditor

View and Edit source of HTML element...

Rated 3 out of 5 stars (20)
1,943 users

HTML Regex Data Extractor

A Regular Expression testing tool
Allow RegExp developer to test the regular expression on the live HTML content. Useful for those who work on crawling website data.

Rated 4 out of 5 stars (12)
1,793 users

XML Viewer

View xml data in textareas, in readable format.

Rated 1 out of 5 stars (2)
2,733 users

xpath finder

Find and experiment with xpath in web pages easily.

Rated 3 out of 5 stars (4)
6,392 users

Dummy Lipsum

Generate "Lorem Ipsum" dummy text (from http://www.lipsum.com).

Rated 4 out of 5 stars (36)
12,668 users

CacheViewer Fx21

Allows searching, sorting and saving of cache files. This is a custom upgrade for of the original CacheViewer add-on by benki. New features have been added.

Compatible up to the latest version of Firefox.

Rated 4 out of 5 stars (32)
10,461 users

JavaScript Terminal No Restart

JavaScript Terminal for Firefox.

Rated 5 out of 5 stars (4)
6,521 users

Illuminations for Developers for Firebug

Enhances Firebug to understand JavaScript libraries and frameworks, making things more obvious and helpful when debugging. Trial version, fully functional.

Rated 3 out of 5 stars (6)
38,587 users

Page Rank Checker

Page Rank Checker: Check Google Page Rank in live mode

Rated 3 out of 5 stars (2)
3,827 users

Juicy Studio Accessibility Toolbar

The toolbar enables developers to examine WAI-ARIA live regions roles and properties, examine data tables, and determine if the colour contrast is sufficient.

Rated 5 out of 5 stars (13)
2,761 users

IE Tab V2 (Enhanced IE Tab)

Note: If you are encountering the Connecting... problem see instructions below.

The updated, fully supported IE Tab. Embed IE in a Firefox tab. IE Tab Features: FF 4+ support, IE 7-9 compatibility modes, old IE Tab settings import.

Rated 4 out of 5 stars (379)
707,258 users

Awesome Screenshot Plus - Capture, Annotate & More No Restart

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

Rated 4 out of 5 stars (883)
205,082 users

MeasureIt

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Rated 4 out of 5 stars (305)
174,534 users

SOA Client

A portable client to access web services and UDDI registries.

Rated 4 out of 5 stars (10)
11,832 users