Add-ons, Extensions, Plugins
- Adobe Flash Player
http://www.adobe.com/go/getflashplayer
Adobe Flash Player is a multiple-platform client runtime. Web users must download and install the player in order to view and interact with Flash content. - Java Downloads
http://java.com/en/download/manual.jsp
Java allows you to play online games, chat with people around the world, calculate your mortgage interest, and view images in 3D. These applications, written in the Java programming language and accessible from your browser, are called "applets". Corporations also use Java applets for intranet applications and other e-business solutions.