SQLite Manager Requires Restart
Manage any SQLite database on your computer.
IE Tab Requires Restart
IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...
This extension allows Adobe installers to detect McAfee Security Scan Plus software is installed on your PC.
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.
Image Zoom Requires Restart
Adds zoom and rotation functionality for images...
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.
Text Link Requires Restart
Allows URI texts written in webpages to be loaded by double clicks.
1) Screen capture web pages.
2) Selected regions.
3) Whole browser windows.
4) Slack direct upload (NEW!)
Edit screenshots and save images as local file or Google Drive. Annotate screenshots with different tools. Upload and share!
Screengrab (fix version) Requires Restart
Screengrab! saves webpages as images.
New features: upload to internet
MeasureIt Requires Restart
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
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.
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.
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
View JSON documents in the browser.
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.
Gives you a place to put all your add-on buttons without over-crowding the navigation bar.
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.