IE Tab Requires Restart
IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...
Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. It includes many extra privacy enhancing options
Quick Locale Switcher Requires Restart
Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.
RESTClient, a debugger for RESTful web services. Requires Restart
Notice: some important features (XML indentation and load old saved requests) are missing in version 2.0.0, please update to version 2.0.1.
Please follow the link ("View other versions") below To install version 2.0.1.
Live HTTP Headers Requires Restart
View HTTP headers of a page and while browsing.
Image Zoom Requires Restart
Adds zoom and rotation functionality for images...
This extension allows Adobe installers to detect McAfee Security Scan Plus software is installed on your PC.
MeasureIt Requires Restart
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
Screengrab (fix version) Requires Restart Featured
Screengrab! saves webpages as images.
New features: upload to internet
1) Screen capture web pages.
2) Selected regions.
3) Whole browser windows.
Edit screenshots and save the images to either local file or Google Drive. Annotate screenshots in a very user-friendly interface with different tools. Upload and share!
Text Link Requires Restart
Allows URI texts written in webpages to be loaded by double clicks.
RefControl Requires Restart
Control what gets sent as the HTTP Referer on a per-site basis.
DOM Inspector Requires Restart
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.
View JSON documents in the browser.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
Gives you a place to put all your add-on buttons without over-crowding the navigation bar.
Cookies Manager+ Requires Restart
Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.
Modify Headers Requires Restart
Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.
Selenium IDE Requires Restart
Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.