When you use a browser to access a website, it can access a server with a built-in browser extension. This means it can make use of all of the tools in the browser. This

will explain how to set up your own extensions, including extensions that you might want to add to the browser for your own website.

source Business Insider (UK), TechCrunch (US) title How to add WebClicks and other WebCasting extensions to your browser, and how to manage them to get them working.

source TechCrunch article This article explains how to add extensions to the Firefox browser and add WebM, WebCaching, and WebRTC extensions to Firefox.

Read more about extensions.

For more extensions, check out this article.

Firefox extensions are installed automatically when you install Firefox, and they can be disabled from the Extensions menu.

Extensions can also be enabled/disabled through the Options menu.