CNET News.com has assembled some of the best entrepreneurial and research minds in the technology industry to share their views on five rapidly evolving technology sectors: security, Web services, open source, personal technology and wireless communications. The 20 participants in this third installment of our Vision Series peer over the horizon and offer their views of these important areas.

Some, such as Yossi Vardi of ICQ fame, predict a future in which wireless messaging technology erases the artificial boundaries that separate people and machines. Others, such as free-software leader Richard Stallman, envision a world where nonproprietary software one day elbows aside for-profit applications packages sold by the likes of Microsoft. Whether talking about security or personal technology, these luminaries go to the heart of why we are fascinated by technology--because it continues to surprise.