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Welcome to Firefox Add-ons.
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Checks your document for semantic elements and highlights them.
"Google Chrome"-like option for blocking repetitive alert(), confirm() and prompt() dialogs. Gets rid of spam dialogs and other infinite loops!
Picozu Shooter is a Mozilla Firefox browser extension, which allows you to take a screenshot of a given browser page, or a specific region of it and save it to a file, clipboard or Picozu Image Editor.
Extracts colors from images and builds color schemes.
A menu for easily access the different Mozilla sites
UpFotoOrkut foi baseado em um script de Elsio Antunes para hospedar imagens no orkut!
Track Changes in Firebug
An extension to Firebug to make dealing with forms easier
Tools for working with OpenSocial applications.
Provides searchable reference information and code examples for HTML and CSS
theWebMind Generator is a complement that allows the developer use the theWebMind engine for generate SQL code and PHP Class.
Easy Debugging for the e107 Content Management System
Revives the 'Clear Private Data' dialog on Firefox exit
Research the preferences listed in about:config via Google.
Adds a "Copy Title" menu item to the pop-up menu. This puts the current page title on the clipboard. CTRL-V to pase.
Stop searching at PHP.net to simply remember some function signature. With this addon you can search functions quickly for the official function description directly into your browser without a new tab.
Plus, many tools to help PHP developers.
Firebug plugin for jQuery development