2005 INFOWORLD CTO 25.

This section features the chief technology officers (CTO) in the U.S. included in the Top 25 CTO Awards of Infoworld as of April 2005. As the holder of more patents--305--than any other IBM employee, anyone would think Ravi Arimilli would rest on his laurels. Instead, the youngest-ever IBM fellow is pushing ahead as chief scientist on the 500-person Power7 eServer development team. Back in 1996, CEO Lou Gerstner asked Arimilli to lead the Power4 server project, with the goal of taking IBM from No. 4 to No. 1 in Unix server market share. With new caching designs, virtualization, and simultaneous multithreading, Arimilli helped achieve that goal with Power4 and Power5. While other security vendors were devoting resources to vulnerability assessment and management, Carl Banzhof, vice president of technology and co-founder of Citadel Security, risked three years developing the first comprehensive, automated vulnerability remediation solution, with a library of hundreds of remediation signatures. Brian Behlendorf believes in developers working together. As one of the founders of Apache, he's seen how teams of geographically dispersed developers turned an upstart open source project into the world's most popular Web server software.