Giesbert's world clock is an application that displays a configurable amount of clocks in different time zones.
It is possible to show the different clocks in several lines, with custom names and with digital and analog clock display. The clocks can be moved from one place to another via drag and drop.
The application shows one clock in the esystem tray and can also be minimized to the system tray. The settings are stored when the application exits, so it reopens in the last state.
The implementation is partly windows dependant as reading of time zones and converting a time to a time zone uses the Win32 API calls.
The auto increment build nr tool (AutoIncreaseBuildNrs) which is used in the pro file is located in gitorious in my project: http://gitorious.org/giesbert-s-world-clock/autoincreasebuildnr
You can also just comment that out, then the version number in version.h is not incremented.