This is my java standalone application "WorkTimeRecorder" (WTR) It's free. You only need java runtime environment 1.3.1 or higher.
If you usually work with a computer and want to record how much time you spend working without writing it down on paper, this application can do it for you. Just start WTR when start working or put WTR in autostart and stop it when you stop working or just stop the computer. It will tell you when your workingweek is over and you can anytime see how much workingtime you have done