Lets take a look the winners, if you want to skip the slides i listed below some categories:

Best of open source developer tools

• Object Database: db4o
• Version Control: git
• Web client Library: httpclient
• Paralell Programing: Intel Threaded Building Blocks (TBB)
• Business Rule Management System: JBoss Druls
• Rich Internet Aplications: open-sourcing the Flex SDK
• Javascript framework: Prototype
• Web Services test tool: sopaUI

Best of open source platforms and middleware

• Systema Operativo: Centos
• Enterprise Service Bus: JBossESB
• DataBase: MySQL
• MySQL Administration: PhpMyAdmin
• Small-footprint OS: Puppy Linux
• Data Migration: Jitterbit
• Desktop Operating System: Ubuntu 8.04
• Desktop virtualization: Virtual Box
• Server virtualization: Xen

Best Opensource for Collaboration

• Social Networking: elgg
• Wiki: MediaWiki
• Mail and calendar: scalix
• Remote control: vnc
• Blog publishingWordpress

Other winners:

• Enterprise Applications
• Networking
• Productivity Applications
• Security
• Storage Software