Kubuntu comes with a very powerful web browser, file management tool and network browser, called Konqueror. Konqueror can support all major web protocols, and allows basic plugins for Macromedia Flash, and Real Media. When you first start up Kubuntu, Konqueror will be in the bottom panel (known as the "kicker"). It may also be invoked through the K-menu by clicking K-Menu->Internet->Web Browser (Konqueror)
Alternatively, the powerful and secure Mozilla Firefox web browser may be obtained in addition to Konqueror. Mozilla Firefox features tabbed browsing, pop-up blocking, in-built search facilities, live bookmarks and more. Also supported are popular plug-ins such as Java, Macromedia Flash, and Real Player just to name a few. Mozilla Firefox is not installed in Kubuntu by default. Mozilla Firefox can be obtained by installing the firefox package (see Chapter 3, Adding, Removing and Updating Applications).
After installation, it can be launched from K-Menu->Internet->Firefox Web Browser from the desktop menu system.
Mozilla Firefox has many Extensions available. Konqueror, on the other, is much more tightly integrated into KDE.