Firefox is known as the quintessential free browser. Users can not only download it free of charge, they can also expand its abilities in almost unlimited ways. A dedicated developer community makes this possible by programming and updating special extensions called add-ons.

One big helper for surfing comfort and speed is provided through an add-on called Adblock Plus. As the name suggests, it eliminates ad banners. During installation, the user can subscribe to filter lists that are then automatically updated to recognize and block new domain addresses used to transport ads. The add-on also appends a "Block" tab onto Java and Flash animations and surfaces. One click and that particular object will never appear again.

NoScript offers added security.

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