Besides the many other activities, I also try to do a little bit of Mac programming. Current / recent projects include:

MoneyWerkz -- a financial management software. MoneyWerkz aims at keeping track of all types of financial-related contracts, providing status reports of your financial situation and calculating forecasts based on user-defined transactions. Implementation is done in Java on MacOS X, based on the native Cocoa API (sorry folks, this will be a 'Mac only' app :-). MoneyWerkz is intended to be released as shareware; the current development version is available for free.

ClockWerkz -- an analog desktop clock. Inspired by the brilliant JS Time for the Windows platform, I thought the Mac community might also like a small and decent analog desktop clock. It's almost completely transparent, both for the eye and for mouse clicks. All you'll see are the tick marks and the handles -- which will always stay on top of any other window. Colors and clock size can be configured freely. Try it out -- it's freeware!

NvdmAPI -- a native Java API for Novadigm Radia servers. The API runs on any Java 1.2 or above VM and provides full read / write access to the contents of the Radia Configuration Server's object database. In this sense, it replaces the Novadigm Tcl-based API completely.