Although I try to use Linux and my Mac as much as possible, my work often demands that I use Microsoft Windows so I have a dual-boot computer with Debian Linux and Windows XP. There are several free utilities on the Microsoft web site that are not included with Windows XP. I thought that some people might find it interesting to hear about these.
SyncToy
Microsoft Photo Info 1.0
Microsoft Network Monitor 3.1
Windows SteadyState
Windows SteadyState was formerly known as Microsoft® Shared Computer Toolkit for Windows XP.) Whether you manage computers in a school computer lab or an Internet café, a library, or even in your home, Windows SteadyState helps make it easy for you to keep your computers running the way you want them to, no matter who uses them. Windows SteadyState is easier to download, set up, use, and maintain than Shared Computer Toolkit.
Microsoft Baseline Security Analyzer v2.0.1
XML Notepad 2007 2.5
http://www.microsoft.com/downloads/details.aspx?familyid=72D6AA49-787D-4118-BA5F-4F30FE913628&displaylang=en
XML Notepad 2007 provides a simple intuitive user interface for browsing and editing XML documents.
XML Diff and Patch
http://download.microsoft.com/download/1/f/1/1f146f9b-2a71-4904-8b91-e2f62d7b64b3/xmldiffpatch.exe
The Microsoft XML Diff and Patch utility can be used for comparing two XML documents and then patching the original document with the differences, to create a final document. The utility can detect structural changes (such as the move of an XML subtree) and can create an Xml Diff Language Diffgram (XDL diffgram or just diffgram) that describes the differences between the two XML documents. The diffgram can then be used to display these differences or perform a patch using the XML Patch tool.
XSD Inference
http://download.microsoft.com/download/8/0/f/80fca9f1-292e-4b50-b512-ccf004d4b58e/xsdinference.exe