Web Cam Image Publisher

This software monitors a web cam and can upload images to a web site. It has many more features and is much more stable than the software shipped by Creative with their web cam. Free download.

Microsoft Office Alternative

OpenOffice has been around for a few years. I mostly install it on unix systems, as the MS Windows systems usually have a site license for the Office Suite. OpenOffice install on unix is straight forward, and there are ports for many operating systems. Version 2.0.1 is available.

Sun is supporting OpenOffice through the StarOffice Suite.

Open Source Virus Scanner

We have been using the open source virus scanner ClamAV since 2004. It is multi-platform, with a web site specifically for the Microsoft Windows version. It has a scheduler to scan files and to download updates.
On XP, memory usage for the Windows background task is about 2,428K with a VM size of 14,408K.