1986, Managing the New Information Products with Linda Rosen (Microsoft)
1991, The Information Factory
1993, Investing in an Information Infrastructure
1994, Internet 2000: The Path to the Total Network
1996, Publishing on the Internet
2001, New Trajectories of the Internet
2004, Enterprise Search Report, 1st edition
2005, Enterprise Search Report, 2nd edition
2006, Enterprise Search Report, 3rd edition
2006, The Google Legacy
2007, Google Version 2: The Calculating Predator
2008, Google: The Digital Gutenberg
2009, Successful Enterprise Search Management with Martin White
2011, The New Landscape of Search
2015, CyberOSINT
2016, Dark Web Notebook