A grandfather clock for your computer.
One Clock is a talking clock that sits in your system tray. At your selected time interval, either every 5 minutes, 15 minutes, 30 minutes, or 1 hour, One Clock will play a chime and announce the current time.
You have the option to turn both the chime and the spoken voice time announcement on or off. And there are eight chimes that you can choose from.
Trial Version.