Netscape Communications Corp. launched its Netscape 6 browser last week. Netscape 6 is available for Windows, Linux, and Macintosh in the United States. A new feature in the product is "My Sidebar," which allows users to store information, look up the latest news headlines and stock quotes, listen to music, and access more than 600 different customizable tabs from Netscape and other companies, such as CNN. Web browsing, e-mail, and instant messaging are combined in one frame in Netscape 6. This is a change from previous versions in which these services were provided by separate applications. The browser addresses security through privacy control features including the Password Manager, the Cookie Manager, and the Forms Manager.