ZD NET LAUNCHES FREE SOFTWARE DEMO CENTER Ziff-Davis Publishing's ZD Net launched the ZD Net Demo Library , the Web's first free software demo center. The ZD Net Demo Library was designed to provide users with a centralized source for downloading vendors' free software demos, enabling them to test and evaluate commercial software products before making a purchase. Currently, the ZD Net Demo Library includes links to hundreds of downloadable software demos, organized into six categories: applications, utilities, Internet, games, home/education and Windows 95.