StreamRipper - records shoutcast-compatible streams

Audacity - audio editor

Gimp for Windows - Graphics Editor

Handy Tweaks To Make GIMP Replace Photoshop - Smashing Magazine

NetDefender - free open source firewall for windows 2000 and XP

OpenOffice - OpenOffice.org is a multiplatform and multilingual office suite and an open-source project. Compatible with all other major office suites,

Open Source Software for Windows

PDFCreator - easily creates PDFs from any Windows program

t@b Media Converter- an audio and video converter / encoder utility which provides a graphical front end for Mencoder*, Sox* and potentially other non-t@b software like RealProducer*

 

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