Tabata Timer - Tabata Timer is a mobile application that helps you perform high-intensity workouts.
ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.
Interval Timer - Interval Timer is a mobile application that helps you stay consistent in your workouts.
LClock - Longhorn systray clock program
Stopwatch Timer - Stopwatch Timer is a mobile application that helps you keep track of your time.
DS Clock - Keep your time synchronized with Atomic Time servers, using customizable digital desktop clock with westminster chimes.