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Edit Source Requires Restart

The Edit Source extension for Firefox 13 and later uses the built in source editor component to let you edit text, HTML, CSS, JavaScript, and XML documents. HTML documents can be refreshed based on your edits, so you can see your changes.

Rated 2 out of 5 stars (5)
249 users
Added April 15, 2012

ua-site-switch

A simple per-site user agent switcher for Firefox

Rated 4 out of 5 stars (5)
372 users
Added April 15, 2012

Masking Agent

Masking Agent protects you from showing platform information (OS and CPU) on the internet.

Rated 4 out of 5 stars (16)
2,349 users
Added April 14, 2012

YouR IP Requires Restart

Display your IP in the addon or status bar of Mozilla Firefox

Rated 4 out of 5 stars (11)
2,403 users
Added April 11, 2012

CSS Viewer Requires Restart

A simple but useful CSS property viewer.
Created by Nicolas Huon.

Rated 3 out of 5 stars (11)
2,206 users
Added April 11, 2012

CSS Toolbox Requires Restart

Some tools for editing CSS stylesheets online

Not yet rated
163 users
Added April 9, 2012

Zrzut.pl Requires Restart

Zrzut.pl to wtyczka pozwalająca na łatwe wykonanie zrzutu (screenshota)
strony internetowej - do wyboru jest wykonanie zrzutu całości strony,
jej widocznej części lub wybranego fragmentu. Możesz też wgrać obraz z
dysku lub otworzyć białą kartkę.

Not yet rated
149 users
Added April 9, 2012

github-addon

Track your GitHub repos and issues from within Firefox!

Not yet rated
3 users
Added April 8, 2012

Umbraco Debug Requires Restart

Plugin displays the debug at the bottom of any Umbraco page. Suitable for versions 4.0+

Not yet rated
23 users
Added April 8, 2012

editURL Requires Restart

Display and edit the url of the current tab.
Reloads with the edited url on enter.

Not yet rated
8 users
Added April 8, 2012

Link Builder Tool Requires Restart

The main purpose of this extension, to make it easier the link building, but it won't do without you.

Not yet rated
7 users
Added April 6, 2012

Trace Metrics Requires Restart

Trace metrics add-on is a web developer tool to inspect the web analytics or metrics tags generated on various pages and events.

Not yet rated
86 users
Added April 3, 2012

Window Master

Functionality for multiple screens and windows. Easily open links in other windows or on other screens, move or merge tabs, and move or merge entire windows. With graphical controls for grid positioning.

Rated 4 out of 5 stars (13)
2,329 users
Added April 2, 2012

TJ SEO RANK Requires Restart

system e behbood dahande ranking.free tools for improve your ranking.

Not yet rated
2 users
Added April 2, 2012

TJ Quick Search Toolbar Requires Restart

Free Quick Search Engine Tarjoo Toolbar

Rated 3 out of 5 stars (1)
1 user
Added April 2, 2012

CQ Helper Requires Restart

This extension provides a custom toolbar button with useful tools for Adobe CQ 5.5 developers.

Rated 5 out of 5 stars (3)
47 users
Added March 27, 2012

L-Square Responsive Design Inspector Requires Restart

Browser pixel rulers to help inspect window widths of adaptive designs. The add-on button acts as a toggle that adds rulers similar to a graphics app to measure the current window resolution.

Rated 3 out of 5 stars (4)
2,253 users
Added March 27, 2012

Magnifier

A quick restartless magnifier to debug styles and web pages.

Rated 3 out of 5 stars (9)
1,458 users
Added March 27, 2012

fireword beta Requires Restart

firefox based word process tools, the tool try to provide another option for word process.
The content is saved as html, so the content can be shared between different platform, even smart phone.

Rated 1 out of 5 stars (1)
2 users
Added March 27, 2012

Domain Whois for Firefox™ Requires Restart

One-click whois tool that lets you lookup any domain name.

Rated 1 out of 5 stars (1)
16 users
Added March 26, 2012