Netscape and IDG Books Worldwide Announce Book Publishing Partnership

FOSTER CITY, Calif. And MOUNTAIN VIEW, Calif. (January 5, 1999) - Netscape Communications Corporation (NASDAQ: NSCP) and IDG Books Worldwide, Inc. have announced that they will jointly produce a line of books and book/CD-ROM packages for consumers and enterprise users. The books will be published under a new "Netscape Press" imprint, which will focus on Netscape products and technologies.

"We want customers to have information on our software available and accessible," said Lori Mirek, senior vice president of marketing at Netscape. "Netscape Press fits into our company-wide initiative to provide customers with the highest level of product support. IDG Books Worldwide's reputation for publishing high-quality books makes this the right partnership to help customers using and deploying Netscape products."

"We think the combination of IDG Books Worldwide's editorial expertise and Netscape's wide range of consumer and business products will make for a breakthrough new series," Said Steve Sayre, associate publisher at IDG Books Worldwide. "Netscape will collaborate with us on titles, content, authorship, and technical review, ultimately providing a superior resource to customers. IDG is excited to be the premiere Netscape publisher and we hope to continue to be so."

Books are expected to be available in bookstores, online, and through both companies' web sites in Spring 1999.

About Netscape
Netscape Communications Corporation is a leading provider of software and services for businesses that want to transform the way they create and keep customers in the emerging Net Economy. The company offers a full line of enterprise software solutions, professional services, and a leading Internet portal to help companies build, buy, or outsource Internet applications that drive revenue growth, build customer loyalty, and create new levels of business efficiency. Traded on NASDAQ under the symbol "NSCP," Netscape Communications Corporation is based in Mountain View, California.

Additional information on Netscape Communications Corporation is available on the Internet at http://home.netscape.com, by sending email to info@netscape.com, or by calling 650/937-2555 (corporate sales).

About IDG Books Worldwide
IDG Books Worldwide, Inc., headquartered in Foster City, Calif.,. is a leading publisher of technology, business and self-help books, including the bestselling ...For Dummies, ...Secrets and Teach Yourself series. IDG Books Worldwide has more than 700 active titles plus books translated into 36 languages around the world.

More information about IDG Books Worldwide is available from the company's SEC filings (NASDAQ: IDGB) or by visiting its web sites: www.idgbooks.com or www.dummies.com. IDG Books Worldwide is a subsidiary of International Data Group, Inc., a leading global provider of information technology media, research, conferences and expositions

Netscape is a registered trademark of Netscape Communications Corporation in the United States and other countries. Other Netscape logos, product names and service names, including Netscape Press, are also trademarks of Netscape Communications Corporation, which may be registered in other countries. Other product and brand names are trademarks of their respective owners.