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File Logging (Selenium IDE)

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

Rated 5 out of 5 stars (5)
5,910 users

CookieSwap

If you have multiple logins for web based e-mail accounts (like Gmail and Yahoo! mail), then CookieSwap enables you to easily switch between those different accounts by swapping the 'cookies' that the sites use to know you.

Rated 4 out of 5 stars (167)
8,435 users

Show MyIP

Displays your current IP address. If you have a static IP (Internet Protocol) address, this number will stay the same each time you visit. If you have a dynamic IP, the number will change each time you log on to the internet (or your ISP assigns a...

Rated 4 out of 5 stars (31)
8,584 users

Context Font

Show the font of selected text in the context menu.

Rated 4 out of 5 stars (13)
3,693 users

InspectorWidget

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

Rated 5 out of 5 stars (4)
1,522 users

Closy

Provides close all blank/duplicate tabs and Close all tabs to the left/right plus many other options.

Rated 4 out of 5 stars (29)
1,414 users

SEO Info

Provides some information on the site you visit: indexed pages, backlinks, link report, pages reported on social network, pagerank, alexa rank, whois, and much more.

Rated 5 out of 5 stars (1)
2,052 users

HTTP Resource Test

Firefox extension for testing HTTP Resources

Rated 4 out of 5 stars (11)
8,439 users

SeoQuake SEO extension

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.

Rated 4 out of 5 stars (190)
73,934 users

Developer Tools - toolbar button

Access and activate the native Firefox Web Developer tools faster through this toolbar button (menu). Button can be placed on any toolbar.

Rated 5 out of 5 stars (6)
9,503 users

Remove It Permanently

Permanently hide content from web pages using the Context Menu. Simply, click and "Remove it Permanently". Now includes previewing of items before removal, support for IFrame as well as lots of advanced features to make it easy for...

Rated 4 out of 5 stars (140)
14,112 users

ViewStatePeeker

This add-on can decode and show viewstate contents of an *.aspx page. Once you intall this add-on, it shows up a 'Show Viewstate' item in context menu of Firefox. When this menuitem is clicked, a popup comes up showing the viewstate details.

Rated 4 out of 5 stars (5)
1,171 users

Remote XUL Manager No Restart

Manages the Remote XUL whitelist to allow websites and local files to load XUL content.

Rated 5 out of 5 stars (29)
27,479 users

SQLite Manager

Manage any SQLite database on your computer.

Rated 5 out of 5 stars (57)
201,399 users

NewScrollbars (aka NoiaScrollbars)

The "NewScrollbars"-extension replaces the default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes".

Rated 5 out of 5 stars (61)
12,438 users

CSSsir

CSSsir is easy and handy tool which allows you to generate cross-browser code for main CSS- rules in a few clicks.
This CSS3 generator will be useful not only for web-masters and designers but also for common users.

Rated 5 out of 5 stars (15)
3,290 users

Auto Reload

Reload page automatically when selected local files are changed.

Rated 4 out of 5 stars (35)
11,307 users

SEO Status PageRank/Alexa Toolbar

See Google Pagerank (PR) and Alexa rank for each website you visit. Simple and customizable. You can see and use everything the toolbar offers, or strip it down to the bare essentials and place it in the status bar. Simple, quick, and very useful.

Rated 4 out of 5 stars (47)
28,385 users

userAgentUpdater No Restart

User Agent Updater Enables you to update User Agent immediately through context-Menu

Rated 3 out of 5 stars (3)
5,523 users

HttpFox

An HTTP analyzer addon for Firefox

Rated 4 out of 5 stars (153)
106,655 users