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Stacked Inspector Requires Restart

Switch DOM Inspector to an over/under vertical layout instead of the usual side-by-side panel layout.

Rated 5 out of 5 stars (10)
395 users

Tabbed View Source

View Page Source in New Tab, Current Tab or New Window

Rated 5 out of 5 stars (10)
304 users

The Addon Bar (Restored)

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

Rated 5 out of 5 stars (341)
96,360 users

DNS Flusher Requires Restart

A Mozilla Firefox add-on that provides a easy way to reload the browser DNS cache.
It's commonly used by developers that uses the Hosts File to force a domain name resolution to a specific IP.

Rated 5 out of 5 stars (50)
19,138 users

StylRRR - Barebones Userstyle Injector

Lets you add userstyles ( website and browser themes) with a mini addon.

Rated 5 out of 5 stars (23)
668 users

Nuke Anything Enhanced Requires Restart

Allows you to hide almost anything via context menu 'Remove Object'.

Rated 5 out of 5 stars (133)
20,153 users

JS Print Setup Requires Restart

Client side Javascript printer settings.
This extension implements print setup from CS Javascript, similar of MeadCo's ScriptX ActiveX control for Internet Explorer.

Rated 5 out of 5 stars (28)
57,417 users

Remote XUL Manager

Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.

Rated 5 out of 5 stars (37)
66,290 users

Proxy Switcher Featured

Access to the complete Firefox's proxy settings right from a toolbar panel

Rated 5 out of 5 stars (31)
37,796 users

Free OmniGraffle (.graffle) Viewer

Open your OmniGraffle files for free

Rated 5 out of 5 stars (9)
276 users

LinkSidebar Requires Restart

View, search and test hyperlinks in a web page.

Perform group actions on multiple links like opening in tabs, copying link locations or testing to determine response times. Allows you to search/sort links and highlight their position on the webpage.

Rated 5 out of 5 stars (16)
1,714 users

StyleSheet Chooser Plus Requires Restart

StyleSheet Chooser Plus (aka SSCP) persists choice of website stylesheets.

Rated 5 out of 5 stars (17)
56 users

Fusebox 5 Reload Requires Restart

This extension (for Firefox 1.5 - 3.0) adds a menu item to the context menu (right-click) and the Tools menu to rebuild the Fusebox 5 memory structure and reparse the XML files. It includes the new (in Fusebox 5) options to loadclean and parseall. Yo...

Rated 5 out of 5 stars (17)
74 users

Transparent standalone images

This add-on renders standalone images on a transparent background, so you can see the image in all its glory!

Rated 5 out of 5 stars (40)
1,188 users

CoLT Requires Restart

CoLT (short for "Copy Link Text") makes it easy to copy either a link's text, or both the link text and its URL in a format you specify. This non-invasive extension simply appears as context menu items when you right-click a link. Fully customizable!

Rated 5 out of 5 stars (102)
5,338 users

Element Properties Requires Restart

Returns the 'Properties' menu item that was removed in Firefox 3.6 to the context menu.

Rated 5 out of 5 stars (118)
3,328 users

WebSocket Monitor

WebSocket monitor is an extension for Firefox developer tools that can be used to monitor WebSocket connections in Firefox. It allows to inspect all data sent and received.

Rated 5 out of 5 stars (11)
5,020 users

View formatted source (format source extension) Requires Restart

Displays formatted and color-coded source and optional CSS information for each element. ...

Rated 5 out of 5 stars (22)
146 users

All About Location Bar Requires Restart

Make URL modification an accurate, smooth and simple experience

Rated 5 out of 5 stars (20)
286 users

5336游戏开服表 Requires Restart

网页游戏开服表提供最新,最权威开服数据.尽享玩游戏一站式便利.上5336游戏开服表,天下页游尽在掌握

Rated 5 out of 5 stars (14)
146 users