Here are some useful downloads

Tools
Autoduck A very good tool to create source code and interface documentations by parsing the comments in the source code of your application for special tags. The documentation will be generated as .doc, .rtf, .html or .hlp-file. The tool was developed by Eric Artzt (a product manager of Microsoft) and the source code is available.
NetTime application The binary file of a tool of mine to update the windows system time by making a ISDN-call.
NetTime source code The source code of my tool (C++/MFC/CAPI).
IncreaseBuild A small tool of mine to increase the build version number automatically every build eg. with the Developer Studio like Microsoft does.
TaskBarNotification A class of mine for easy displaying multiple animated taskbar tray icons with multiple states and different popup menus, animations and tooltip strings per state (with sample code).

My diplomathesis
Diplomathesis application The binary file of my diplomathesis, a sample to create photorealistic surfaces with mathematical textures and phong shading. It has a bad GUI because it was my first windows application, but the graphical result are pretty good.
Diplomathesis source code The source code files of my diplomathesis (C++/OWL).