PrefBar Requires Restart
Sync engine for Stylish with backup / restore facility.
JSON-DataView Requires Restart
Displays JSON data in a collapsible tree structure with syntax highlights.
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!
Link Properties Plus Requires Restart
Provides extended link properties: size of linked file, last modified time, etc.
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
Console² Requires Restart
Goes up a folder of a website.
View Page Source in New Tab, Current Tab or New Window
View JSON documents in the browser.
Extended Link Properties + (obsolete) Requires Restart
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
NoScript Security Suite Requires Restart Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Form History Control Requires Restart
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.
Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
Control for which webpage form history is saved or not.
Adds a new page that shows add-on memory usage
Firepicker Requires Restart
Simple color picker plugin for Firebug.
Juicy Studio Accessibility Toolbar Requires Restart
The toolbar enables developers to examine WAI-ARIA live regions roles and properties, examine data tables, and determine if the colour contrast is sufficient.
Stacked Inspector Requires Restart
Switch DOM Inspector to an over/under vertical layout instead of the usual side-by-side panel layout.
Toolbar button that lets you disable and re-enable Flash with just one click.