Web Development

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HTTP Header Mangler No Restart

HTTP Header Mangler inserts HTTP headers on a per host basis.

Rated 4 out of 5 stars (5)
1,480 users

Cookie Watcher

Cookie Watcher is a tool to watch selected cookie in a statusbar.

Rated 5 out of 5 stars (6)
1,478 users

FillForms

FillForm is a small extension to help you fill page forms.
Fill out current web all forms with a keyboard shortcut(Alt + Q).

Rated 5 out of 5 stars (31)
2,616 users

Preferences Monitor No Restart

Track your Firefox's (about:config) preferences for unwanted changes.

Rated 5 out of 5 stars (36)
1,921 users

FlareGet Integration No Restart

FlareGet Browser Integration extension

Rated 4 out of 5 stars (3)
4,026 users

GitHub Extension Installer No Restart

Install Browser Extensions straight from GitHub Repositories

Rated 5 out of 5 stars (8)
2,195 users

Stylish Sync No Restart

Sync engine for Stylish with backup / restore facility.

Rated 5 out of 5 stars (19)
5,701 users

Extended Link Properties + (obsolete)

This application extends the Link Properties and displays File Size, Last Modified Date, Content Type and HTTP Header of a link...
Warning: developing discontinued, see least

Rated 5 out of 5 stars (14)
1,026 users

Toggle JS No Restart

A simple toolbar button to quickly toggle javascript between enabled or disabled.
A green shield is shown when javascript is enabled and a red shield is shown when it is disabled

Rated 5 out of 5 stars (8)
4,604 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)
1,212 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 (53)
20,760 users

User Agent Changer

Adds a menu and a toolbar button to change the user agent of a browser.

Rated 4 out of 5 stars (6)
3,839 users

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)
54,253 users

RefreshBlocker

RefreshBlocker is a small extension for the Firefox web browser. This extension will prevent your browser from following the forwarding specified by the refresh parameter of the META tag element.

Rated 3 out of 5 stars (54)
4,482 users

Re-Pagination No Restart

See more search results etc. on one page, concatenating several pages together...

Rated 4 out of 5 stars (43)
4,048 users

MozRepl

Interactive Javascript Console for Mozilla Applications Developers

Rated 4 out of 5 stars (11)
19,550 users

Pearl Crescent Page Saver Basic screenshot tool

Save an image of a web page (including Flash content) to a file. Web page screenshots may be captured interactively or from the command line. Options allow you to control the output format (PNG or JPEG), image file name, scaling, and much more.

Rated 4 out of 5 stars (77)
82,428 users

Browser View

Open links, pages, and bookmarks in any other browser, using right-click context menus or with one click of the drop-down or standalone toolbar buttons. Modify any menu, browser name or location. Incognito/private browsing mode is also supported.

Rated 4 out of 5 stars (40)
1,696 users

Seo панель xtool_checker для Sape,Seopult ...

Plugin for Sape.ru from Xtool.ru

Rated 5 out of 5 stars (2)
3,085 users

Proxy Finder (IP Switcher) No Restart

Proxy Finder is an advanced proxy management tool. With Proxy Finder, you can easily change your geo-location in one click!

Rated 3 out of 5 stars (2)
4,374 users