Rajesh Jain blogged the The 2003 OSDir.com Editor's Choice Awards in Open Source - I added the 'links' and the 'Best of Platform' category.
Summary:
Best Application in...
Java: Eclipse
Perl: MovableType
Python: BitTorrent
PHP: PHP
XML: Jabber
Best Applications:
Instant Messaging: Gaim
Email: SpamAssassin (Double Winner)
Overall Desktop App: OpenOffice
Database: MySQL
Web: Tiki
Best of Platform:
Linux: openMosix and EtherBoot
Mac & Windows: OpenOffice